摘要
采用索氏抽提法提取伽师酸梅核仁油,并对其理化性质、脂肪酸组成与热稳定性进行分析。结果表明：伽师酸梅核仁油相对密度（20℃）、酸值（KOH）、过氧化值、皂化值（KOH）、碘值（I）、折光指数（n20D）分别为0.913 1、0.84 mg/g、0.61 meq/kg、188.36 mg/g、114 g/100 g、1.458 0;伽师酸梅核仁油主要脂肪酸组成为油酸、亚油酸、棕榈酸、硬脂酸,其中不饱和脂肪酸含量达91.87%;伽师酸梅核仁油在紫外光UV-B（290-320 nm）及UV-C（230-290 nm）波段有一定的吸收,可作为防晒剂加以开发;热重分析表明伽师酸梅核仁油失重从400.2℃开始至433.3℃终止,失重速率峰值在415.3℃;差示扫描量热分析表明伽师酸梅核仁油的结晶和熔融曲线中各有1个特征峰。伽师酸梅核仁油具有较高的开发利用前景。
The Jiashi plum kernel oil was obtained by Soxhlet extraction method,and its physicochemical property,fatty acid composition and thermal stability were analyzed. The results showed that the relative density（ 20 ℃）,acid value,peroxide value,saponification value,iodine value and refractive index of Jiashi plum kernel oil were 0. 913 1,0. 84 mg KOH / g,0. 61 meq / kg,188. 36 mg KOH / g,114 g I /100 g and 1. 458 0 respectively; the main fatty acids of Jiashi plum kernel oil were oleic acid,linoleic acid,palmitic acid and stearic acid,and the content of unsaturated fatty acids was up to 91. 87%. Jiashi plum kernel oil showed high absorbance in the ranges of UV-B（ 290-320 nm） and UV-C（ 230-290 nm）,which indicated that the oil could be used as sun-screening agent. Thermal gravity analysis results indicated that the decomposition of Jiashi plum kernel oil began at 400. 2 ℃ and ended at 433. 3 ℃,with the highest value of weightlessness rate at 415. 3 ℃. Differential scanning calorimetry analysis results indicated that single peak was detected in both crystallization curve and melting curve. Jiashi plum kernel oil had high potential to be developed and utilized.
出处
《中国油脂》
CAS
CSCD
北大核心
2016年第3期89-92,共4页
China Oils and Fats
关键词
伽师酸梅核仁油
理化性质
热稳定性
脂肪酸组成
Jiashi plum kernel oil
physicochemical property
thermal stabiliy
fatty acid composition
