کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1985907 1540234 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Some physicochemical and rheological properties of starch isolated from avocado seeds
ترجمه فارسی عنوان
برخی از خواص فیزیکی و شیمیایی نشاسته جدا شده از دانه های آوکادو
کلمات کلیدی
نشاسته آووکادو، خصوصیات فیزیکوشیمیایی، خصوصیات رئولوژیکی
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
چکیده انگلیسی


• The avocado seed (Persea americana Mill.) starch was isolated using two different extraction solvents.
• Functional and rheological properties of Avocado starch were evaluated.
• Avocado seed starch has potential application in food systems as a thickening and gelling agent.

Seeds from avocado (Persea americana Miller) fruit are a waste byproduct of fruit processing. Starch from avocado seed is a potential alternative starch source. Two different extraction solvents were used to isolate starch from avocado seeds, functional and rheological characteristics measured for these starches, and comparisons made to maize starch. Avocado seed powder was suspended in a solution containing 2 mM Tris, 7.5 mM NaCl and 80 mM NaHSO3 (solvent A) or sodium bisulphite solution (1500 ppm SO2, solvent B). Solvent type had no influence (p > 0.05) on starch properties. Amylose content was 15–16%. Gelatinization temperature range was 56–74 °C, peak temperature was 65.7 °C, and transition enthalpy was 11.4–11.6 J/g. At 90 °C, solubility was 19–20%, swelling power 28–30 g water/g starch, and water absorption capacity was 22–24 g water/g starch. Pasting properties were initial temperature 72 °C; maximum viscosity 380–390 BU; breakdown −2 BU; consistency 200 BU; and setback 198 BU. Avocado seed starch dispersions (5% w/v) were characterized as viscoelastic systems, with G ′> G″. Avocado seed starch has potential applications as a thickening and gelling agent in food systems, as a vehicle in pharmaceutical systems and an ingredient in biodegradable polymers for food packaging.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 86, May 2016, Pages 302–308
نویسندگان
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