Article (Scientific journals)
The effect of microwave pretreatment on micronutrients contents, oxidative stability and flavor quality of peanut oil
Hu, Hui; Liu, Hongzhi; Aimin, Shi et al.
2019In Molecules, 24 (1), p. 62
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Keywords :
peanut; cold press; microwave pretreatment; Phytosterol; Tocopherol; oxidative stability; Pyrazines
Abstract :
[en] The purpose of the present study is to investigate the changes in extraction yield, physicochemical properties, micronutrients content, oxidative stability and flavor quality of cold pressed peanut oil extracted from microwave (MW) treated seeds (0, 1, 2, 3, 4, 5 min, 700 W). The acid value and peroxide value of extracted oil from MW-treated peanuts were slightly increased but far below the limit in the Codex standard. Compared with the untreated sample, a significant (p < 0.05) increase in extraction yield (by 33.75%), free phytosterols content (by 32.83%), free tocopherols content (by 51.36%) and induction period (by 168.93%) of oil extracted from 5 min MW-treated peanut were observed. MW pretreatment formed pyrazines which contribute to improving the nutty and roasty flavor of oil. In conclusion, MW pretreatment is a feasible method to improve the oil extraction yield and obtain the cold pressed peanut oil with longer shelf life and better flavor.
Research center :
Special National Key Research and Development Plan [2016YFD0400204]
Technology Innovation Program of the Chinese Academy of Agricultural Sciences [CAAS-ASTIP-201X-IAPPST]
Disciplines :
Food science
Chemistry
Author, co-author :
Hu, Hui
Liu, Hongzhi
Aimin, Shi
Li, Liu
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Qiang, Wang
Language :
English
Title :
The effect of microwave pretreatment on micronutrients contents, oxidative stability and flavor quality of peanut oil
Publication date :
2019
Journal title :
Molecules
eISSN :
1420-3049
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Switzerland
Volume :
24
Issue :
1
Pages :
62
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 27 December 2018

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