کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7786499 | 1500622 | 2016 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and characterization of corn starch-β-carotene composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Starch-β-carotene composites were generated by drop-wise addition of ethanol comprising varying β-carotene contents (5, 10, or 20 mg) into starch pastes (1, 3, or 5% w/v) to improve water-dispersibility and stability of β-carotene. The mean diameter of the composites was less than 900 nm, allowing particles to be homogeneously dispersed in aqueous media for over two weeks without sedimentation. X-ray diffraction and differential scanning calorimetry analysis confirmed the composite mainly consisted of Vh-amylose, amorphous starch matrices, and starch-β-carotene ordered structures. Both amorphous matrices and Vh-amylose structures in the composite were readily digested within 20 min in vitro digestion, while highly ordered structures, which melted between 132 and 159 °C, exhibited inhibited and/or delayed enzymatic digestion. As more β-carotene was incorporated into the composite, the β-carotene content of the ordered structure was increased. Formation of starch-β-carotene composites also appeared to enhance the stability of β-carotene against chemical oxidation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 136, 20 January 2016, Pages 394-401
Journal: Carbohydrate Polymers - Volume 136, 20 January 2016, Pages 394-401
نویسندگان
Jong-Yea Kim, Kerry C. Huber,