LAPSE:2019.1639
Published Article
LAPSE:2019.1639
Effects of Processing Conditions on the Simultaneous Extraction and Distribution of Oil and Protein from Almond Flour
Neiva M. de Almeida, Fernanda F. G. Dias, Maria I. Rodrigues, Juliana M. L. N. de Moura Bell
December 16, 2019
The enzyme-assisted aqueous extraction process (EAEP) is an environmentally friendly strategy that simultaneously extracts oil and protein from several food matrices. The aim of this study was to investigate the effects of pH (6.5−9.5), temperature (45−55 °C), solids-to-liquid ratio (SLR) (1:12−1:8), and amount of enzyme (0.5−1.0%) on the extraction and separation of oil and protein from almond flour using a fractional factorial design. Oil and protein extraction yields from 61 to 75% and 64 to 79% were achieved, respectively. Experimental conditions resulting in higher extractability were subsequently replicated for validation of the observed effects. Oil and protein extraction yields of 75 and 72% were achieved under optimized extraction conditions (pH 9.0, 50 °C, 1:10 SLR, 0.5% (w/w) of enzyme, 60 min). Although the use of enzyme during the extraction did not lead to significant increase in extraction yields, it did impact the extracted protein functionality. The use of enzyme and alkaline pH (9.0) during the extraction resulted in the production of more soluble peptides at low pH (5.0), highlighting possible uses of the EAEP skim protein in food applications involving acidic pH. The implications of the use of enzyme during the extraction regarding the de-emulsification of the EAEP cream warrant further investigation.
Keywords
almond flour, enzyme-assisted aqueous extraction process, oil extraction, protein extraction, solubility
Suggested Citation
de Almeida NM, F. G. Dias F, Rodrigues MI, L. N. de Moura Bell JM. Effects of Processing Conditions on the Simultaneous Extraction and Distribution of Oil and Protein from Almond Flour. (2019). LAPSE:2019.1639
Author Affiliations
de Almeida NM: Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA; Department of Agro-industrial Management and Technology, Federal University of Paraíba, PB 58000-000 Bananeiras, Brazil
F. G. Dias F: Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA [ORCID]
Rodrigues MI: Protimiza Experimental Design, 13000-000 Campinas, Brazil
L. N. de Moura Bell JM: Department of Food Science and Technology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA; Department of Biological and Agricultural Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA [ORCID]
Journal Name
Processes
Volume
7
Issue
11
Article Number
E844
Year
2019
Publication Date
2019-11-11
Published Version
ISSN
2227-9717
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Original Submission
Other Meta
PII: pr7110844, Publication Type: Journal Article
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LAPSE:2019.1639
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doi:10.3390/pr7110844
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Dec 16, 2019
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CC BY 4.0
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Dec 16, 2019
 
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Calvin Tsay
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