科研之友
微信
新浪微博
Facebook
分享链接
摘要
Gardenia fruit is an extraordinary functional oil-bearing material product with few research on its potential for the direct production of industrial oil-bearing products. This study compared the physicochemical properties, lipid properties and thermal/oxidative stability of gardenia fruit oil produced by subcritical butane extraction (SBE) and cold-pressed extraction (CPE). The results indicated that the gardenia oil extracted by the above two methods had excellent physicochemical properties; where C18:2, C18:1 and C18:3 were dominant fatty acids in the fruit oil. The infrared spectrum showed high-intensity bands at 3009 cm(-1)-2855 cm(-1) and 1746 cm(-1), representing chemical groups of total oil and fat and unsaturated fatty acid (UFAs). Indexes such as atherogenic index (AI), thrombotic index (TI) and hypocholesterolemic/hypercholesterolemic fatty acids (HH) revealed that gardenia oil might benefit human health by lowering total cholesterol. The oil contained 7 kinds of phytosterols (dominated by beta-sitosterol) and a high level of squalene, vitamin E, carotenoids, polyphenols and total flavonoids. It also had advantageous initial/maximum degradation temperatures and stable oxidative induction time, which suggested its potential as a raw material for edible products, chemical and pharmaceutical industries. The oil produced by SBE was superior to the former (P < 0.05) in terms of oil extraction rate, concomitant product content and thermal/oxidative stability. This indicated that the SBE technology was an ideal alternative for the industry to produce gardenia oil with very good physiological activity.
-
单位广东省农业科学院
