Joshi Kalpana S
Department of Biotechnology, Sinhgad College of Engineering, Pune, Maharashtra, India.
J Ayurveda Integr Med. 2014 Apr;5(2):85-8. doi: 10.4103/0975-9476.131730.
Ghee (clarified butter) also known as ghrita, has been utilized for thousands of years in Ayurveda. Ghee is mostly prepared by traditional method in Indian households or by direct cream method at industry level. Ayurvedic classics mention that ghrita made from cow milk is superior. However, there is no scientific comparison available on preparation methods and essential fatty acids content of ghrita.
To investigate fatty acid composition of ghrita prepared by traditional/Ayurvedic method and commercial method (direct cream method).
Fatty Acid Methyl Esters (FAME) extracted from ghrita samples were analysed on Gas Chromatography (GC) Shimadzu B using capillary column BPX70 (0.32 mm*60 m, ID of 0.25 mm). The fatty acids in the samples were identified by comparing peaks with the external standard 68A (Nu-Chek-Prep, Inc.USA). Significant differences between the experimental groups were assessed by analysis of variance.
Distribution of fatty acids was compared in ghrita samples prepared by traditional method and direct cream method which is commercially used. Saturated fatty acids were predominant in both the groups. Mono unsaturated fatty acids and poly unsaturated fatty acids were in the range of 17-18% and 3-6% respectively. DHA content was significantly higher in ghee prepared by traditional method using curd starter fermentation.
The findings suggested that ghrita prepared by traditional ayurvedic methods contains higher amount of DHA; Omega-3 long-chain polyunsaturated fatty acids, which is a major component of retinal and brain tissues and remains important in prevention of various diseases.
酥油(澄清黄油)也被称为ghrita,在阿育吠陀医学中已被使用了数千年。酥油大多在印度家庭中采用传统方法制备,或在工业层面采用直接奶油法制备。阿育吠陀医学经典提到,用牛奶制成的ghrita更优质。然而,关于ghrita的制备方法和必需脂肪酸含量,尚无科学比较。
研究采用传统/阿育吠陀方法和商业方法(直接奶油法)制备的ghrita的脂肪酸组成。
从ghrita样品中提取的脂肪酸甲酯(FAME)在岛津B型气相色谱仪上使用BPX70毛细管柱(0.32毫米×60米,内径0.25毫米)进行分析。通过将样品中的峰与外标68A(美国Nu-Chek-Prep公司)进行比较来鉴定脂肪酸。通过方差分析评估实验组之间的显著差异。
比较了采用传统方法和商业使用的直接奶油法制备的ghrita样品中的脂肪酸分布。两组中饱和脂肪酸均占主导。单不饱和脂肪酸和多不饱和脂肪酸分别在17%至18%和3%至6%的范围内。采用凝乳发酵剂发酵的传统方法制备的酥油中DHA含量显著更高。
研究结果表明,采用传统阿育吠陀方法制备的ghrita含有更高含量的DHA;欧米伽-3长链多不饱和脂肪酸,它是视网膜和脑组织的主要成分,在预防各种疾病方面仍然很重要。