کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1219197 | 1494512 | 2007 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Physicochemical and quality characteristics of cold-pressed flaxseed oils Physicochemical and quality characteristics of cold-pressed flaxseed oils](/preview/png/1219197.png)
Flaxseed oils currently sold on the worldwide market are not governed by specific standards or specifications. In this study, the physicochemical and quality characteristics of seven cold-pressed flaxseed oils sold in New Zealand have been analyzed. General regulations and specification for edible vegetable oils and cold-pressed oils were used as a guide. Fatty acid composition, tocopherol composition, moisture and volatile matter content, free fatty acids, chlorophyll pigments, total phenolic acids, total flavanoids, acid value, unsaponifiable matter, peroxide value, conjugated dienoic acids, p-anisidine value and specific extinction in the ultraviolet spectrum of the flaxseed oils were measured. Color and dielectric measurement of the flaxseed oils were also estimated using a spectrocolorimeter and a food oil sensor, respectively. The physicochemical characteristics of the flaxseed oils were found to be quite similar with only a few significant variations. Four out of the seven flaxseed oils passed all the quality tests conducted in this study.
Journal: Journal of Food Composition and Analysis - Volume 20, Issues 3–4, May 2007, Pages 202–211