نوع مقاله : مقاله پژوهشی لاتین

نویسندگان

1 گروه علوم و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران.

2 گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه فردوسی مشهد

چکیده

در این مطالعه، تاثیر بتاگلوکان و شرایط رساندن (دما و زمان) بر برخی ویژگی‌های فیزیکوشیمیایی و بافتی ماست سویا منجمد مورد بررسی قرار گرفته است. سه متغیر شامل مقدار بتاگلوکان (صفر، 1و 2 درصد)، زمان رساندن (2، 13 و 24 ساعت) و دمای رساندن (2، 4 و 6 درجه سانتی‌گراد) مورد مطالعه قرار گرفت. نتایج نشان داد که افزودن بتاگلوکان به ماست منجمد باعث افزایش ویسکوزیته، اورران، سختی و ناپایداری چربی گردید اما مقاومت به ذوب و شاخص L* را کاهش داد. از نظر شرایط رساندن، مشخص شد که افزایش زمان رساندن کیفیت محصول را افزایش داده در حالی که دمای بالاتر تاثیر نامطلوبی بر کیفیت ماست سویا منجمد بر جای گذاشت. زمان رساندن طولانی ترسبب افزایش ویسکوزیته، سختی، ناپایداری چربی و مقاومت به ذوب شد. با افزایش دمای رساندن ناپایداری چربی، اورران و ویسکوزیته کاهش یافت و سرعت ذوب افزایش یافت. بر اساس این یافته‌ها می‌توان نتیجه گرفت که افزودن بتاگلوکان به‌عنوان فیبر رژیمی و زمان رساندن طولانی در دمای کمتر می‌تواند ویژگی‌های بافتی ماست سویا منجمد را تعدیل و کیفیت این دسر منجمد را بهبود دهد.

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