نوع مقاله : مقاله پژوهشی

نویسندگان

1 مشهد- طرق- مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی

2 دانشکده کشاورزی دانشگاه فردوسی مشهد

چکیده

توت سفید میوه ای با ارزش تغذیه ای بالاست. توت به علت داشتن درصد رطوبت بالا، عمر نگهداری زیاد ندارد. توت خشک و شیره توت از جمله فراورده‌های متداول بدست آمده از توت هستند. هدف از این پژوهش، تولید پاستیل توت به‌عنوان فراورده‌ای نوین از توت با زمان نگهداری طولانی و ارزش افزوده بالا است که بتواند بصورت یک میان وعده سالم و در مواردی جایگزین قند (برای مصرف با چای و قهوه) مطرح باشد. در این تحقیق برای تهیه پاستیل توت، از ترکیبات هیدروکلوئیدی شامل ژلاتین (صفر، 1 و 2 درصد) و گوار (صفر، 5/0 و 1 درصد)، استفاده شد. ویژگی‌های حسی، بافتی و پارامترهای رنگی (L*، *a و b*) نمونه‌های حاصل مورد بررسی قرار گرفتند. افزایش غلظت گوار باعث افزایش میزان پیوستگی، الاستیسیته و قابلیت جویدن و کاهش چسبندگی نمونه‌ها شد. در بین فرمول‌های مورد بررسی، پاستیل توت حاوی 1 درصد گوار و 1 درصد ژلاتین با داشتن کمترین میزان سختی، چسبندگی به دندان و قابلیت جویدن (اهم خواص حسی و بافتی مشترک) و همچنین ویژگی‌های رنگی مناسب، به‌عنوان فرمول بهینه تعیین شد.

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