文献类型： 外文期刊
作者： Wei Xiong 1 ; Qiang Liang 1 ; Xia Xu 1 ; Shi-Qin Zeng 1 ; Ling Zhao 1 ; Pu Xuan 1 ; Ying-Zheng Yao 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Inst Agroprod Proc Sci & Technol, Chengdu 610066, Peoples R China
2.Chengdu Univ, Coll Food & Biol Engn, Chengdu 610106, Peoples R China
3.Sichuan Acad Agr Sci, Inst Food Nutr & Hlth, Chengdu 610066, Peoples R China
关键词： okra seed oil; degumming; phospholipids; silicon dioxide; adsorbing; electronic nose (E-nose)
期刊名称：JOURNAL OF OLEO SCIENCE （ 影响因子：1.628； 五年影响因子：1.828 ）
ISSN： 1345-8957
年卷期： 2022 年 71 卷 8 期
页码：
收录情况： SCI
摘要： Water degumming, mainly removes hydrated phospholipids, is the most common method applying in traditional edible oil production. Silicon dioxide (SiO2) adsorption has been proved as a green and efficient method for removing phospholipids from rapeseed oil. But both methods exhibited poor effect on okra seed oil. Based on a hypothesis that SiO2 can adsorb non-hydrated phospholipids, removal effect of non-hydrated phospholipids in okra seed oil was studied. Single factor test and response surface design were used to optimize the SiO2 adsorbing process in water-degummed oil. Meanwhile, the qualities and flavor changes of okra seed oil before and after degumming were compared and analyzed. The results showed that the optimized degumming procedure was: 1.43% (w/w) of SiO2 added into the water-degummed oil, and the mixture was stirred at 33.52 degrees C for 30.47 min. The maximum non-hydrated phospholipids removal rate reached 43.3%. Comparing with crude okra seed oil, the optimal degumming method resulted in the increase of peroxide value and the decrease of induction period (IP) of the oil. However, it had the same safety as the water and the SiO2 degumming methods. It could retain 62% of total phenols, which was less than the water and the SiO2 degumming methods (both about 79%). The differences of E-nose sensors among oils were most likely caused by the pyrazines. It is necessary to study the composition and properties of phospholipids and develop new methods to further improve the phospholipids removal rate of okra seed oil.
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