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Records with Subject: Food & Agricultural Processes
26. LAPSE:2023.36662
Effect of Atmospheric Cold Plasma on the Aroma of Pineapple Juice: Improving Fresh and Fruity Notes and Reducing Undesired Pungent and Sulfurous Aromas
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: Ananas comosus, aroma, dielectric barrier discharge plasma, food chemistry, quality
Pineapple aroma is characterized by several esters, which confers its fresh and fruity aroma. However, high concentrations of methyl hexanoate and thioesters bring an undesired pungently sweet aroma and sulfurous notes to pineapple juice. This study investigates the chemical effects of cold plasma on the aroma compounds and descriptors of pineapple juice, evaluating the effects of plasma on its esters and thioesters. Dielectric barrier discharge plasma was applied to pineapple juice, varying the excitation frequency (50 to 1000 Hz) and processing time (10 to 20 min) at constant voltage (20 kV). Plasma treatment induced successive demethylation of esters and the conversion of methyl esters into ethyl esters. Thioesters showed to be more stable under plasma treatment. Proper setting of plasma operating conditions enabled an improvement in the fresh and fruity descriptors of pineapple juice, a reduction of its undesired pungently sweet aroma, but an increase in the influence of sulfurous... [more]
27. LAPSE:2023.36659
Breaking New Ground: Exploring the Promising Role of Solid-State Fermentation in Harnessing Natural Biostimulants for Sustainable Agriculture
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: crop improvement, natural biostimulant, organic waste, solid-state fermentation, sustainable agriculture
Agriculture has been experiencing a difficult situation because of limiting factors in its production processes. Natural biostimulants (NBs) have emerged as a novel alternative. This study reviews NBs produced through solid-state fermentation (SSF) from organic waste, focusing on processes and production methods. The aim is to highlight their potential for improving agricultural productivity and promoting sustainable agriculture. Through a literature review, the effects of NBs on crops were summarized, along with the challenges associated with their production and application. The importance of standardizing production processes, optimizing fermentation conditions, and assessing their effects on different crops is emphasized. Furthermore, future research areas are introduced, such as enhancing production efficiency and evaluating the effectiveness of SSF-produced NBs in different agricultural systems. In conclusion, SSF-produced NBs offer a promising alternative for sustainable agricul... [more]
28. LAPSE:2023.36650
Valorization of Peanut and Walnut Shells through Utilisation as Biosorbents for the Removal of Textile Dyes from Water
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: adsorption kinetics, biosorbents, dye removal, methylene blue, peanut shells, walnut shells
The present research focuses on the application of peanut and walnut shells, in their natural state, for the removal of methylene blue (MB) from water solutions in batch and dynamic (flow-through) conditions. Under batch conditions, at a 100 mg/L MB concentration of aqueous solution, the optimum dose of the studied biosorbents was determined to be 2.5 g/L, reaching about 95−97% efficiency of MB removal for both materials. Langmuir and Freundlich isotherms were used to model and evaluate the experimental data under different initial concentrations of MB (25 to 100 mg/L). The determined maximum adsorption capacities are 41.50 mg/g for walnut shells and 46.80 mg/g for peanut shells. Under flow-through conditions, breakthrough curves are determined for three sizes of fractions (<0.25 mm, 0.315−0.5 mm, and 0.8−1.6 mm). For peanut shells, the smaller the particle size, the higher the adsorption capacity and the column breakthrough time. For walnut shells, however, the particle size seems... [more]
29. LAPSE:2023.36640
Effects of Temperature and Pressure on Hemp Oil Filtration Parameters and Peroxide Number
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: hemp oil, oil filtration, oil storage, oil treatment, oil viscosity, oxidation stability of oils, plate filters, vegetable oil processing, vegetable oils
This article focuses on the quality of hemp oil processing, specifically the filtration that is an important part of the technological procedure of processing vegetable oils. The aim of the research was to determine the effects of pressure and temperature on the filtration parameters when using plate filters. The research was carried out on an experimental measuring device with adjustable static pressure. The qualitative properties of the oil were observed in terms of analytical composition, microbial content, and changes in peroxide value as the indicator of oxidation stability. The change in pressure affected the oil flow rate, especially at lower pressure values. The increase in temperature of the filtered oil had a negative impact on the oxidation stability.
30. LAPSE:2023.36635
Steam Explosion of Eucalyptus grandis Sawdust for Ethanol Production within a Biorefinery Approach
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: biomass moisture content, cellulosic ethanol, eucalypt sawdust, high total solids, PSSF, steam explosion
In this work, Eucalyptus grandis sawdust was subjected to steam explosion as the first step in cellulosic ethanol production within a biorefinery approach. The effect of the moisture content in the eucalypt sawdust (8 and 50%) and pretreatment process variables, such as temperature and residence time, were evaluated along with the influence of the water washing of steam-exploded solids on enzymatic hydrolysis and C6 fermentation yields. All other process streams were characterized to evaluate the recovery yield of valuable co-products. A recovery of nearly 100% glucans in the solid fraction and 60% xylans in the liquid fraction, mainly as partially acetylated oligomers, was obtained. The best enzymatic hydrolysis efficiencies (66−67%) were achieved after pretreatment at 205 °C for 10 min. The washing of pretreated sawdust with water improved the hydrolysis efficiencies and ethanol production yields by 10% compared to the unwashed pretreated solids under the same experimental condition.... [more]
31. LAPSE:2023.36631
Evaluation of the Capsaicinoid Extraction Conditions from Mexican Capsicum chinense Var. Mayapan with Supercritical Fluid Extraction (SFE)
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: antioxidant capacity, capsaicinoids, Capsicum chinense, supercritical fluid extraction
Capsaicin (Cp) is a secondary metabolite produced by the Capsicum plant family. This molecule exhibits various biological properties such as antioxidant capacities, anti-obesogenic effects, and antidiabetic properties, among others. However, conventional extraction methods for Cp present several disadvantages including toxicity, extraction time, and low purity. Therefore, the utilization of supercritical fluid extraction techniques represents a viable option for obtaining highly pure and low-toxicity oleoresins (capsaicin-rich extracts). This approach involves the use of CO2 in the supercritical state and finds applicability in the pharmaceutical, food, and cosmetic industries. The Capsicum chinense variety from the Yucatán Peninsula is a crop with significant economic impact in the region, due to having the highest concentrations of Cp in Mexico. This significant characteristic is attributed to its adaptation to the unique conditions (climate, soil, solar radiation, humidity) of the s... [more]
32. LAPSE:2023.36624
Plant-Derived Essential Oils and Aqueous Extract as Potential Ingredients for a Biopesticide: Phytotoxicity in Soybean and Activity against Soybean Mosaic Virus
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: Biocontrol, Glycine max, Potyvirus
Soybean mosaic disease, caused by the soybean mosaic virus (SMV), is responsible for major losses in yield and seed quality worldwide. Although resistant cultivars are used for its prevention and control, an alternative strategy could consist of applying environmentally friendly antimicrobial agents, such as extracts and essential oils (EOs) of aromatic plants. This study assessed an extract of Achyrocline satureioides and EOs of Minthostachys verticillata, Origanum vulgare, and Thymus vulgaris in terms of their phytotoxicity in soybean. Since all the concentrations tested were found to be safe, the activity of each product against SMV was then assayed in vivo, i.e., in experimentally infected soybean plants. The parameters measured were plant height, wet weight, and virus titer. All the treated plants had a greater height and weight than those in the viral control group. The EOs of M. verticillata (0.80 mg/mL) and T. vulgaris (0.71 mg/mL) inhibited the production of viral antigens, as... [more]
33. LAPSE:2023.36612
Green Extraction Techniques of Bioactive Compounds: A State-of-the-Art Review
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: antioxidant, bioactive pigments, bioeconomy, green chemistry, phenolic compounds
Green extraction techniques are more and more relevant due to major sustainable goals set by the United Nations. Greener extraction processes are being designed through the use of unconventional extraction techniques and green solvents, resulting in less hazardous processes which, consequently, reduces environmental impacts. This is also in line with the main principles of green chemistry. Additionally, greener extraction techniques intend to solve different drawbacks that are often related to conventional extraction techniques such as the high environmental impact. Biorefineries are a major player in developing greener extraction processes. These facilities take full advantage of several biomass sources, such as food waste, microalgae, and lignocellulosic biomass, in order to create high-value products, energy, alternative fuels, and bioactive compounds. Herein, a state-of-the-art review is presented, focused on presenting the greenest and least hazardous extraction processes that hav... [more]
34. LAPSE:2023.36606
DPPH Radical Scavenging Assay
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: 1,1-diphenyl-2-picrylhydrazil, antioxidant assay, antioxidants, DPPH
Today, there is an increasing interest in antioxidants, especially to prevent the known harmful effects of free radicals in human metabolism and their deterioration during processing and storage of fatty foods. In both cases, natural-source antioxidants are preferred over synthetic antioxidants. So, there has been a parallel increase in the use of assays to estimate antioxidant efficacy in human metabolism and food systems. Today, there are many bioanalytical methods that measure the antioxidant effect. Of these, the 1,1-diphenyl-2-picrylhydrazil (DPPH) removing assay is the most putative, popular, and commonly used method to determine antioxidant ability. In this review, a general approach to the DPPH radical scavenging assay has been taken. In this context, many studies, including attempts to adapt the DPPH radical scavenging method to different analytes, search for the highest antioxidant activity values, and optimize the method of measurement, have previously been performed. Theref... [more]
35. LAPSE:2023.36602
Application of High-Intensity Ultrasound on Acerola (Malpighia emarginata) Juice Supplemented with Fructooligosaccharides and Its Effects on Vitamins, Phenolics, Carotenoids, and Antioxidant Capacity
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: FOS, Malpighia emarginata, nutritional quality, stability, ultrasound
Acerola is considered a superfruit, rich in vitamin C, phenolics, and carotenoids, and having a high antioxidant capacity. However, it is poor in oligosaccharides. Ultrasound technology can improve the bioavailability of several bioactive compounds, improving the nutritional content of several fruit juices. This work evaluated the use of ultrasound processing on acerola juice supplemented with fructooligosaccharides (FOS; 1% w/w) and its effects on the availability of vitamins, carotenoids, and phenolic content. The antioxidant capacity of the juice was correlated with its bioactive contents. The study evaluated the effects of important sonication parameters, such as ultrasonic power density, processing time, and processing temperature. The application of ultrasound was efficient in increasing the availability of some vitamins. As a result, ultrasound application increased the availability of vitamins B1, B3, B5, C, carotenoids, and phenolic compounds. This improvement increased the an... [more]
36. LAPSE:2023.36593
Relevance of Meat Juice Seroprevalence and Presence of Yersinia enterocolitica and Salmonella spp. in Pig Tonsils for Risk Management at Slaughter
September 20, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: farming systems, pigs, Salmonella spp., seroprevalence, tonsils, Yersinia enterocolitica
spp. and Yersinia enterocolitica are priority bacteriological public health hazards in pork safety. For more successful control, it is necessary to collect data on their prevalence throughout the meat chain using the concept of harmonized epidemiological indicators. The aim of this study was to determine their prevalence in fattening pigs under different housing conditions by recovering the pathogen from tonsils and by serological testing of diaphragm meat juice at slaughterhouses. The overall prevalence of Salmonella spp. and Y. enterocolitica in tonsils was 9.8% and 6.5%, respectively, with no significant differences between large and small farms (p > 0.05). In general, seroprevalence of Salmonella spp. was 48.35% and of Yersinia 13.18% (p < 0.05) but without significant differences of individual seroprevalence between farm types. No association was found between detection of Salmonella spp. or Y. enterocolitica in tonsils and seroprevalence (φc = 0.121, p = 0.420; φc = 0.027, p =... [more]
37. LAPSE:2023.36573
Plasma Agricultural Nitrogen Fixation Using Clean Energies: New Attempt of Promoting PV Absorption in Rural Areas
August 3, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: agricultural nitrogen fixation, discharge characteristics, gliding arc discharge, plasma, remote rural areas, solar energy
In recent years, a large number of countries have connected and distributed photovoltaics in remote rural areas, aiming to promote the use of clean energy in rural areas. The solar energy that is not used in time needs to be discarded, resulting in a large amount of wasted energy. Rural areas are closely related to agricultural production, and solar energy can be used for agricultural nitrogen fixation to supplement the nitrogen needed by crops and effectively use the upcoming waste of solar energy. A photovoltaic-driven plasma reactor for nitrogen fixation in agriculture was designed in this study. The air inlet and outlet holes are arranged above and below the reactor to facilitate air entry and directly interact with the gliding arc generated at the bottom of the electrode to achieve atmospheric nitrogen fixation in agriculture. The characteristics of gliding arc development in the process of nitrogen fixation in agriculture were studied experimentally. There are two discharge modes... [more]
38. LAPSE:2023.36536
An Overview of Carbon Emission Mitigation in the Food Industry: Efforts, Challenges, and Opportunities
August 3, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: carbon offset, carbon-neutral food, emission hotspot, emission mitigation, GHG verification, greenhouse gas (GHG)
The food system plays a significant role in anthropogenic greenhouse gas (GHG) emissions, contributing to over one-third of these emissions. However, there has been limited attention given in the literature on how the food industry can effectively address the carbon issue. This review aims to bridge this research gap through providing a comprehensive overview of anthropogenic GHG emissions and exploring the role of carbon markets in mitigating climate change, with a specific emphasis on the food industry. It delves into the introduction of emission hotspots within the food industry, examines ongoing efforts in GHG emissions mitigation, and addresses the challenges associated with GHG verification and offsetting. Notably, emission hotspots are primarily found in the farm, manufacturing, and post-production stages of the food industry. The emissions from the farm stage, which are often overlooked, make a significant contribution to overall emissions. Carbon verification encounters limita... [more]
39. LAPSE:2023.36528
Determination of Soil Agricultural Aptitude for Sugar Cane Production in Vertisols with Machine Learning
August 3, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: land use, Machine Learning, soil agricultural aptitude, sugar cane, vertisols
Sugarcane is one of the main agro-industrial products consumed worldwide, and, therefore, the use of suitable soils is a key factor to maximize its production. As a result, the need to evaluate soil matrices, including many physical, chemical, and biological parameters, to determine the soil’s aptitude for growing food crops increases. Machine learning techniques were used to perform an in-depth analysis of the physicochemical indicators of vertisol-type soils used in sugarcane production. The importance of the relationship between each of the indicators was studied. Furthermore, and the main objective of the present work, was the determination of the minimum number of the most important physicochemical indicators necessary to evaluate the agricultural suitability of the soils, with a view to reducing the number of analyses in terms of physicochemical indicators required for the evaluation. The results obtained relating to the estimation of agricultural capability using different numbe... [more]
40. LAPSE:2023.36521
Optimization of Cellulase-Assisted Extraction of Total Flavonoids from Equisetum via Response Surface Methodology Based on Antioxidant Activity
August 3, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: antioxidant capacity, cellulase-assisted extraction, Equisetum arvense L., flavonoid compounds, response surface methodology
Flavonoids are one of the most essential compounds in various plants. This study used the cellulase-assisted method to extract flavonoid-enriched antioxidants from Equisetum arvense L. (EAL). According to a three-factor and three-level central composite design, the response surface methodology was used to obtain the maximum total flavonoid yield, thereby providing the most potent antioxidant activity of EAL extracts. The results indicated that the optimal condition for the total flavonoid extraction was 0.52% (base substrate) enzyme concentration and enzymolysis for 50.58 min at 49.03 °C. The extraction rate of flavonoids from horsetail reached 4.88 mg/g under these optimal conditions. The yield was 51.23% higher than that from the traditional solid−liquid extraction method. The highest DPPH-scavenging ability of the extracts obtained under 0.50% enzyme concentration and enzymolysis for 49.41 min at 46.59 °C was 77.36%. HPLC results revealed that the antioxidant substances had diverse... [more]
41. LAPSE:2023.36514
Torrefaction under Different Reaction Atmospheres to Improve the Fuel Properties of Wheat Straw
August 3, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: agricultural residues, Biofuels, non-oxidative torrefaction, oxidative torrefaction, response surface methodology (RSM)
This study aimed to produce biochar with an energy value in the range of sub-bituminous carbon by investigating the effect of oxidative and non-oxidative torrefaction on the torrefaction yield and fuel properties of wheat straw. Three independent variables were considered at different levels: temperature (230, 255, 280, 305 °C), residence time (20, 40, 60 min), and reaction atmosphere (0, 3, 6 vol% O2; N2 balance); and three dependent variables: mass yield, energy yield, and percentage increase in higher heating value (HHV). The results showed that it is possible to produce a sub-bituminous carbon type C biochar using oxidative torrefaction, significantly reducing time and temperature compared with non-oxidative torrefaction. The optimum torrefaction conditions were 287 °C−20 min−6.0% O2, which increased the HHV of wheat straw from 13.86 to 19.41 MJ kg−1. The mass and energy yields were 44.11 and 61.78%, respectively. The physicochemical and fuel properties of the obtained biochar were... [more]
42. LAPSE:2023.36505
Changes in Carcass Composition, Meat Quality Traits, and Stress Levels in Culled Sows Exposed to Different On-Farm Rest Periods
August 3, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: carcass composition, cortisol levels, culled, pig meat quality, resting period, sow
The study investigated the effect of on-farm rest period (RP) on carcass composition, meat quality, and stress indicators of culled sows. The study was conducted on 84 Large White × Landrace culled sows, which were divided into seven groups (n = 12) with respect to the duration of the on-farm rest period: no rest period (N-RP) group and 1 to 6 weeks of on-farm rest period (1−6 RP). After completion of the on-farm RP, each group of culled sows was slaughtered and the carcass and meat quality traits were determined. Sows from 6-RP had a significantly higher dressing percentage and backfat thickness and, together with sows from 5-RP, a higher shoulder weight. The highest shoulder percentage was found in the 3-RP and 4-RP groups, while 1-RP had the highest percentage for the belly−rib part. At the same time, RP influenced the final pH values (pH24 SM and pH24 LL) measured in the longissimus thoracis et lumborum (LT) and in the musculus semimembranosus (SM), as well as drip loss, thawing lo... [more]
43. LAPSE:2023.36457
Long-Term Skin Safety Effect of Chlorine-Rich Water Treatment on C57BL/6 Mice
August 2, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: anti-inflammation, antioxidants, chlorine-rich sterilized water (ClRW), non-allergic response, skin safety
Background: The weakened keratinocyte cohesion, wrinkle formation, loss of elasticity, decreased sebum production, increased water loss, and other skin problems caused by a compromised skin barrier can eventually result in various skin diseases. Given its current usage as a disinfectant and its potential use in medicine, it is crucial to assess the safety of chlorinated water. Objective: The study’s objective was to evaluate the long-term skin safety effects of chlorine-rich sterilized water (CIRW) treatment on C57BL/6 mice in vivo. Methods: Reactive oxygen species (ROS), nitric oxide (NO), glutathione peroxides (GPx), and catalase (CAT), as well as cytokines involved in inflammation (such as interleukin (IL)-1α, IL-1 β, IL-13, GM-CS, and TNF-α) were tested as oxidative stress markers in both serum and skin. The skin parameters such as moisture level, elasticity, sebum, pore size, and wrinkles were measured. Results: The CIRW group showed higher elasticity and humidity than the NC grou... [more]
44. LAPSE:2023.36448
Effects of High-Intensity Ultrasound Pretreatment on the Exopolysaccharide Concentration and Biomass Increase in Cheese Whey Kefir
August 2, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: Biomass, cheese whey, exopolysaccharide, high-intensity ultrasound, kefir beverage, kefir grains
Cheese whey (CW) is the liquid by-product of cheese and yogurt making. This potential pollutant has high-quality nutrients exploitable through fermentation processes. Using high-intensity ultrasound on dairy products has shown several technological advantages for bioprocesses. Therefore, this study aimed to investigate the effect of high-intensity ultrasound (HIUS) on kefir grains biomass increase and specific metabolites in CW kefir. Fresh CW was ultrasonicated at 9.0 ± 2.7 and 18.0 ± 3.0 W/cm2 for 30 and 180 s, inoculated with kefir grains, and fermented for 40 h. Total exopolysaccharide production, kefir grains biomass increase, titratable acidity, pH, and soluble solids were analyzed every 8 h. CW pretreated with 18.0 ± 3.0 W/cm2 for 180 s and fermented for 16 h had significantly higher (p < 0.05) total exopolysaccharide concentration than the control: 212.7 ± 0.0 and 186.6 ± 0.0 mg/L, respectively. Ultrasonicated CW at 18 W/cm2 for 30 and 180 s at 24 h fermentation time had sig... [more]
45. LAPSE:2023.36426
Enriching the Bioactive Components and Antioxidant Capacity of Concentrated Lime Juices Prepared by Cryogenic and Vacuum Processes
August 2, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: antioxidant, bioactive, flavonoid, freeze concentration, lime juice, vacuum concentration
Lime juice is rich in bioactive components and exerts a wide range of therapeutic effects, especially antioxidant activity. Freeze concentration is considered an essential method to maintain the nutritional values and bioactives of fruit juices. This study aimed to compare the ability in enriching ascorbic acid, total phenolic compounds, and major flavonoids and the antioxidant activity (DPPH) of concentrated lime juices prepared by vacuum and freeze-concentrations. The ascorbic acid in the juices was analyzed using the HPLC-PDA method. The total phenolic content and DPPH inhibition ability were measured by the colorimetric method. The polyphenol profiles of two lime varieties (C. latifolia and C. limonia) were qualitatively analyzed using LC-TOF MS/MS; then, the major juices’ flavonoids were analyzed by HPLC-PDA against/based on commercial standards. The results showed that C. latifolia was superior to C. limonia in ascorbic acid, TPC, major flavonoids, and antioxidants. C. latifolia... [more]
46. LAPSE:2023.36413
Development of a Novel Hydrodynamic Sequencing Batch Reactor for Landfill Leachate Treatment by Shortcut Biological Nitrogen Removal
August 2, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: hydrodynamic model, nitrite accumulation, nitrogen removal, oxygen transfer rate, wastewater treatment
This study introduced an alternative shortcut biological nitrogen removal (SBNR) process for landfill leachate treatment by developing a novel hydrodynamic sequencing batch reactor (H-SBR). The reactor could enhance the oxygen transfer rate (OTR) and nitrite accumulation ratio (NAR) by modifying internal hydrodynamic turbulence intensity. The average chemical oxygen demand (COD) and total nitrogen (TN) concentrations introduced into the reactor were 660 and 250 mg L−1, respectively, and the average removal efficiencies were 93% (COD) and 96% (TN). The effect of geometric parameters on oxygen transfer was estimated by performing a hydrodynamic model and a nonlinear least square analysis. After correcting the constants (α and β) of mass transfer coefficients (KLa) to values of 0.7361 and 1.2639, the model data fit the experiment well with an R-squared value of 0.99. The OTR improved by up to 30%, and hence, increased the NAR by up to 20% with a reduction of about 0.5 kg N kW−1 for power... [more]
47. LAPSE:2023.36384
Use of Potential Immobilized Enzymes for the Modification of Liquid Foods in the Food Industry
July 13, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: biocatalysts, enzymes, food industry, immobilization, immobilized enzymes
Enzymes are complex proteins that carry out biochemical reactions. Apart from being necessary for life, they are used in numerous industrial processes, especially in the textile, pharmaceutical, food and chemical sectors. One of the longest-lived industries regarding the use of enzymes is the food industry. Enzymes have always been used, mainly in their free form, to obtain new products and to improve the organoleptic qualities in different industries, such as in dairy, fruit and vegetables, and beverages. However, today, immobilized enzymes are the focus of attention in the liquid food industry, as they offer numerous advantages, such as stabilization and reuse, which enable cost reduction.
48. LAPSE:2023.36362
Special Issue: Application of Proteomics and Enzyme Technologies in Foods
July 13, 2023 (v1)
Subject: Food & Agricultural Processes
This Special Issue entitled “Application of Proteomics and Enzyme Technologies in Foods” explores the latest progress and perspectives on the development and application of enzyme technologies, proteomics, and bioprocessing in the context of food science [...]
49. LAPSE:2023.36353
Influence of Inorganic Salt Additives on the Surface Tension of Sodium Dodecylbenzene Sulfonate Solution
July 13, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: anionic surfactants, critical micelle concentration, inorganic salt additives, ionization, shield, static electricity, surface tension
In order to study the effect of inorganic salt additives on the surface tension of a sodium dodecylbenzene sulfonate (SDBS) solution, the surface tension of the mixed system of six common inorganic salt additives, NaCl, CaCl2, AlCl3, Na2SO4, Na2CO3, and NaHCO3, and SDBS was measured, and the effects of the inorganic salt types, surfactant concentrations and inorganic salt concentrations on the surface tension of the SDBS solution were studied. On this basis, three inorganic salts, NaCl, CaCl2 and Na2SO4, were selected, and their effects on the critical micelle concentration (CMC) of the SDBS solution were studied. The experimental results showed that different inorganic salts had different effects on the surface tension of the SDBS solution. The order of effect of the six inorganic salts on the surface tension of the SDBS solution was CaCl2 > NaCl > Na2SO4 > NaHCO3 > Na2CO3 > AlCl3; when the mass fraction of the SDBS solution is high, the influence of the inorganic salts on the surface... [more]
50. LAPSE:2023.36315
Ataulfo Mango (Mangifera indica L.) Peel Extract as a Potential Natural Antioxidant in Ground Beef
July 7, 2023 (v1)
Subject: Food & Agricultural Processes
Keywords: colour stability, ground beef, mango peel extract, natural antioxidants, oxidative stability
Total phenolic content (TPC), total flavonoid content (TFC), antioxidant and antimicrobial in vitro activity of ethanolic (EE) and hydroethanolic (HE) extracts of mango peel Ataulfo were evaluated. The highest TPC, TFC and antioxidant capacity were as shown in EE. Ethanolic extract was incorporated into ground beef at 1000 (BBEA) and 2000 mg/kg meat (BEEB) concentrations and then compared with 250 mg of sodium ascorbate/kg meat (ASC) along with a control (without antioxidant). The effects of adding EE on instrumental colour, metmyoglobin content, thiobarbituric acid reactive substances (TBARS), pH, microbial load and sensorial analysis of ground beef were evaluated for 11 days at 4 °C. BEEB added in raw ground beef improved colour stability while the lipid oxidation in raw and raw-cooked ground beef was inhibited with a greater antioxidant effect than ASC and a similar overall acceptability score (cooked ground beef). However, incorporating BEEB into ground beef did not show significan... [more]