Effects of preheating and drying methods on pyridoxine, phenolic compounds, ginkgolic acids, and antioxidant capacity of Ginkgo biloba nuts
文献类型： 外文期刊
作者： Amoussa, Abdou Madjid Olatounde 1 ; Zhang, Lixia 1 ; Lagnika, Camel 1 ; Riaz, Asad 1 ; Zhang, Liuquan 2 ; Liu, Xian 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Res Inst Agr Product Proc, Zhong Lingjie Rd 50, Nanjing 210014, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Res Inst Agr Product Safety & Nutr, Zhong Lingie Rd 50, Nanjing 210014, Jiangsu, Peoples R China
3.Univ Abomey Calavi, Fac Sci & Technol, Lab Biochem & Bioact Nat Subst, Cotonou, Benin
4.Univ Manitoba, Dept Food & Human Nutr Sci, Winnipeg, MB, Canada
关键词： antioxidant activity; drying; ginkgo nuts; ginkgolic acids; preheating; pyridoxine analogues
期刊名称：JOURNAL OF FOOD SCIENCE （ 影响因子：3.167； 五年影响因子：3.377 ）
ISSN： 0022-1147
年卷期： 2021 年 86 卷 9 期
页码：
收录情况： SCI
摘要： Although ginkgo nuts are very nutritious and loaded with numerous bioactive compounds, the nuts contain significant levels of unwanted compounds (ginkolic acids) which are toxic to consumption. To reduce or eliminate these toxic compounds without impacting the nutritional value and the bioactivity of the final product, an appropriate processing technology is needed. Thus, the effect of preheating (90 and 120 degrees C) prior to drying (freeze drying: FD, hot air drying: HAD, and HAD in tandem with FD: HAD-FD) was evaluated on ginkgolic acids, pyridoxine analogues, phenolic compounds, and antioxidant properties of ginkgo nuts. Our results pointed out a significant decrease (below 50%) of ginkgolic acids in ginkgo nuts samples processed at 90 degrees C compared to the control. The major compounds found after treatments were respectively, kaempferol (36.66-354.38 mu g/g), quercetin (9.04-183.71 mu g/g), and caffeic acid (19.66-106.88 mu g/g). Principal component analysis (PCA) revealed that preheating at 90 degrees C prior to HAD-FD would be a proper and reasonable approach for preserving the bioactive compounds and antioxidant capacity of ginkgo nuts (EC50 ranged from 2.25 to 4.60 mg/mL) while significantly reducing their content in toxic compounds.
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