کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4514954 1624873 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of milkweed (Asclepias spp.) seed proteins
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Characterization of milkweed (Asclepias spp.) seed proteins
چکیده انگلیسی

Milkweed (Asclepias spp.) is a crop grown mainly for the production of floss used as hypoallergenic fillers in comforters and pillows. The seeds end up as by-products. Milkweed seed contains 21% oil and 30% crude protein (dry basis). The oil is similar in quality to soybean oil, but there is no information on the properties of milkweed protein. This study determined the MW of major fractions, soluble classes, amino acid composition, and functional properties of milkweed seed protein. Ground milkweed seeds were analyzed for proximate composition and amino acid profile, as well as, subjected to SDS-PAGE and protein functionality tests. Reduced proteins showed eight distinct bands with MW ranging from 6.5 to 59.3 kDa. The dominant protein classes were water-soluble (22%) and salt-soluble (15%). Solubility of milkweed seed protein was lowest (12%) at pH 4, 40% at pH 7, and reached a maximum (60%) at pH 10. The protein produced substantial foam volumes, but foam stability was poor. Its emulsifying capacity was excellent, especially at pH 10, and emulsions formed were stable. Water-holding capacity and surface hydrophobicity index values were higher at pH 7 than at pH 10. These results showed that milkweed seed protein has functional properties that may find use as a thickener, protein extender in adhesives, or emulsifier in paints.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 29, Issues 2–3, March 2009, Pages 275–280
نویسندگان
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