اثر شرایط تخمیر و آغازگرهای Saccharomyces cerevisiae (PTCC 5052) و Lactobacillus Plantarum (PTCC 1058) بر مقدار اسید فیتیک سبوس گندم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد علوم و صنایع غذایی، دانشگاه آزاد قوچان

2 استادیار، علوم و صنایع غذایی، دانشگاه زابل

3 استادیار، علوم و صنایع غذایی، دانشگاه آزاد قوچان

چکیده

سبوس گندم با دارا بودن فیبر و املاح بالا از خواص تغذیه‌ای سودمندی برخوردار است، اما به‌دلیل حضور ترکیب ضد تغذیه‌ای به‌نام اسید فیتیک کاربرد محدودی دارد. در این پژوهش اثر سه آغازگر مختلف تهیه شده از S. cerevisiae PTCC 5052  و L. Plantarum PTCC 1058، درجه حرارت (25، 30 و 35 درجه سانتی‌گراد) و طول زمان تخمیر (0،2، 4، 6 و 8 ساعت) بر مقدار pH ، اسیدیته و غلظت اسید فیتیک سبوس گندم استریل شده بررسی گردید. نتایج نشان دادS. cerevisiae PTCC 5052  در مقایسه با L. Plantarum PTCC 1058 با دارا بودن فعالیت فیتازی بالاتر، اثر بیش‌تری در تجزیه اسید فیتیک سبوس می‌باشد (p). کم‌ترین مقدار اسید فیتیک در نمونه سبوس گندم تلقیح شده با S. cerevisiae PTCC 5052 و تخمیر شده در دمای c◦30 برای مدت زمان 8 ساعت مشاهده گردید (p).

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The influence of alone and starter culture combinations Saccharomyces cerevisiae (PTCC 5052) وLactobacillus Plantarum(PTCC1058), fermentation time and temperature on phytic acid content of Wheat bran

نویسندگان [English]

  • Malika Kamali Shahri 1
  • Mohammad Ali Najafi 2
  • Ismail Ata Salehi 3
1 M.Sc. Student, Food Science and Technology, Islamic Azad University, Quchan, Quchan, Khorasan Razavi, Iran
2 Assistant Professor, Food Science, Faculty of Agriculture, University of Zabol, Zabol, Sistan and Baluchestan, Iran
3 Assistant Professor, Department of Food Science and Technology, Islamic Azad University, Quchan, Quchan, Khorasan Razavi, Iran
چکیده [English]

Wheat bran with high fiber & mineral has beneficial nutritional properties, that via the presence of anti nutritional compound called phytic acid has limited application. In this study, the effects of three different starter cultures prepared from S. cerevisiae PTCC 5052 and L. Plantarum PTCC 1058, temperature (25, 30 and 35◦C) and fermentation time (0, 2, 4, 6 and 8 hour) on the level of pH and acidity, also phytic acid concentration (%) in sterilized wheat bran was investigated. The results showed S. cerevisiae PTCC 5052, with more phytase activity, was more efficient than L. Plantarum PTCC 1058 in lowering the phytic acid concentration in the wheat bran. The lowest phytic acid concentration was observed in prepared sample when S. cerevisiae PTCC 5052 was used as starter culture and incubated at 30◦C for 8 h.

کلیدواژه‌ها [English]

  • Phytic acid
  • Bran
  • Yeast
  • Acid lactic bacteria
  • Phytase activity
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