بررسی ویژگی‌های رئولوژیکی خمیر و خصوصیات فیزیکوشیمیایی نان سنگک با استفاده از پودر آب پنیر و هیدروکلوئیدها ی گوار و کتیرا

نویسندگان
نفیسه عبدالله زاده
حجت کاراژیان
گروه علوم و صنایع غذایی، واحد تربت حیدریه، دانشگاه آزاد اسلامی، تربت حیدریه، ایران.
10.22034/FSCT.21.149.114
چکیده
نان بخش مهمی از نیاز روزانه افراد جامعه را تأمین می‏کند و ضرورت برنامه‏ریزی پیرامون بهبود کیفیت آن احساس می‏شود. در تحقیق حاضر از پودر آب پنیر و صمغ‏های گوار و کتیرا هر کدام در سطوح 1/0، 3/0 و 5/0 درصد و به صورت ترکیبی در قالب دو تیمار 25/0 درصد پودر آب پنیر و 25/0 درصد صمغ گوار و 25/0 درصد پودر آب پنیر و 25/0 درصد صمغ کتیرا در فرمولاسیون نان سنگک با هدف بهبود ویژگی‏های فارینوگرافی و اکستنسوگرافی خمیر و خصوصیات فیزیکوشیمیایی و حسی نان سنگک حاصله استفاده شد. نتایج نشان داد بیشترین جذب آب و زمان توسعه خمیر و کمترین افت وزن و سفتی بافت در نمونه حاوی 5/0 درصد صمغ کتیرا مشاهده شد. نمونه‏های حاوی صمغ گوار و کتیرا و نمونه حاوی 25/0 درصد پودر آب پنیر و 25/0 درصد صمغ گوار دارای بیشترین زمان ثبات خمیر بودند. صمغ کتیرا بیشترین نقش بر کاهش درجه سستی خمیر و افزایش عدد کیفیت فارینوگراف داشت. صمغ گوار بیش از سایر ترکیبات بر بهبود کشش‏پذیری خمیر مؤثر بود. تأثیر صمغ کتیرا و گوار بر مقاومت به کشش خمیر به ترتیب افزایشی و کاهشی بود. بیشترین انرژی مورد نیاز برای کشش خمیر در نمونه حاوی 25/0 درصد پودر آب پنیر و 25/0 درصد صمغ کتیرا مشاهده شد. افزودنی‏های استفاده شده سبب بهبود امتیاز بو، رنگ و قابلیت جویدن نان سنگک شدند. در نهایت نمونه حاوی 5/0 درصد صمغ کتیرا (اولویت اول) و نمونه حاوی 25/0 درصد پودر آب پنیر و 25/0 درصد صمغ کتیرا (اولویت دوم) به عنوان نمونه‏ های برتر معرفی می‏شود.
کلیدواژه‌ها
نان سنگک
فارینوگراف
اکستنسوگراف
افت وزن
بافت
ویژگی‌های حسی

موضوعات

عنوان مقاله English

Investigating the rheological properties of dough and evaluating physiochemical properties of Sangak bread using whey powder and hydrocolloids of guar and tragacanth

نویسندگان English

Nafise Abdollahzade
Hojjat Karazhiyan
Department of Food Science and Technology, Torbat-e Heydarieh Branch, Islamic Azad University, Torbat-e Heydarieh, Iran
چکیده English

In current study, whey powder, guar and tragacanth gums were used at the different levels of 0.1, 0.3 and 0.5%, and in a mixed forms of 0.25% whey powder and 0.25%. Guar gum, 0.25% of whey powder and 0.25% of tragacanth gum in the formulation of Sangak bread to improve farinographic and extensograph properties of dough and physicochemical and sensory properties of bread. The results showed that the highest water absorption and dough development time and the lowest weight loss and firmness were observed in the sample containing 0.5% tragacanth gum. The samples containing guar gum and tragacanth and the sample containing 0.25% whey powder and 0.25% guar gum had the longest dough stability time. Tragacanth gum had the greatest role in reducing the degree of softening and increasing the farinograph quality number. Guar gum was more effective than other ingredients in improving dough extensibility. The effect of tragacanth gum and guar on dough resistance was increasing and decreasing, respectively. The highest energy was observed in the sample containing 0.25% whey powder and 0.25% tragacanth gum. The additives used improved the odor, color and chewability of Sangak bread. Thus, the sample containing 0.5% tragacanth gum (1 priority) and the sample containing 0.25% whey powder and 0.25% tragacanth gum (2 priority) has been introduced as the best samples.

کلیدواژه‌ها English

Sangak bread
Farinograph
Extensograph
Weight loss
texture
Sensory properties
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