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تأثیر فرکانس های تلفیقی و زمان اعمال پیش تیمار امواج فراصوت روی جذب روغن طی سرخ کردن قطعات سیب زمینی | ||
مهندسی بیوسیستم ایران | ||
مقاله 5، دوره 49، شماره 1، فروردین 1397، صفحه 35-47 اصل مقاله (759.85 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/ijbse.2017.234629.664957 | ||
نویسندگان | ||
سمیرا محمدعلی نژاد1؛ جلال دهقان نیا* 2؛ سیدحسین جلالی1 | ||
1دانشگاه تبریز، دانشکده کشاورزی، گروه علوم و صنایع غذایی | ||
2دانشگاه تبریز، دانشکده کشاورزی، گروه علوم و مهندسی صنایع غذایی | ||
چکیده | ||
در سالهای اخیر، استفاده از امواج فراصوت، با توجه به اثرات مؤثر آن در فرآیندهای مختلف مواد غذایی رو به گسترش میباشد. هدف از این پژوهش، بررسی تأثیر تلفیقی فرکانسهای مختلف امواج فراصوت بهصورت پیشتیمار روی جذب روغن طی فرآیند سرخ کردن عمیق قطعات سیبزمینی و تعیین زمان بهینه کاربرد این امواج بود. در این پژوهش، از امواج فراصوت تحت فرکانسهای 28 و 40 کیلوهرتز به صورت مجزا و تلفیقی به مدت 30 دقیقه استفاده شد. استفاده از امواج فراصوت در هر دو فرکانس به صورت مجزا و تلفیقی، جذب روغن را کاهش داد. بهطوریکه استفاده از امواج فراصوت با فرکانس 40 کیلوهرتز به مدت 30 دقیقه بالاترین کاهش در جذب روغن را به میزان 19/23% از خود نشان داد. همچنین، مدلسازی جذب روغن بر حسب زمان، محتوای رطوبت، چروکیدگی و دانسیته ظاهری انجام شد و مدلهایی بر حسب دما و زمان سرخکردن و فرکانس و زمان امواج فراصوت ارائه شد. | ||
کلیدواژهها | ||
سرخکردن؛ جذبروغن؛ فراصوت؛ مدلسازی | ||
مراجع | ||
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