ارزیابی تاثیر گاز ازن بر ویژگی های کیفی و میکروبی دانه ذرت

نویسندگان
جلال محمدزاده 1
جواد زنگانه 2
1 بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات کشاورزی و منابع طبیعی استان گلستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران
2 مرکز تحقیقات فراورده های غذایی دارویی و طبیعی دانشگاه علوم پزشکی گلستان، گرگان، ایران
10.22034/FSCT.19.135.11
چکیده
تولید ذرت بعد از گندم مقام دوم را در بین غلات داشته و معمولاً بخش زیادی از آن بلافاصله پس از برداشت مورد استفاده قرار نمی­گیرد­، بلکه برای استفاده تدریجی در فصول دیگر و یا به­منظور صادرات به سایر مناطق، در انبارها نگهداری می­شود. گسترش انواع قارچ­ها و به­دنبال آن تولید سم­های قارچی به­خصوص در مناطق با رطوبت بالا، علاوه بر خسارت کمی و کیفی به محصولات انبار شده سبب افزایش ضایعات و به­مخاطره انداختن سلامت جامعه می­شوند. در راستای جایگزینی روش‌های کم­خطر افزایش عمر­انبارمانی، در این تحقیق تاثیر گاز ازن با دو متغیر غلظت ازن (25 ،50 و 75 ppm) در مدت زمان

ازن­دهی (1،3، 5 و 7 روز) بر دانه ذرت غالب منطقه گلستان (رقم سینگل­کراس407) ارزیابی شد. همچنین ویژگی­های میکروبی به لحاظ کنترل گسترش قارچ­ها و تغییرات خصوصیات کیفی دانه­ بررسی شد. نتایج نشان داد، افزایش غلظت ازن تا ppm 50 و زمان ازن­دهی3 روز بر کاهش رشد قارچ ­ها و تولید آفلاتوکسین معنی­دار بوده است (05/0>P). همچنین نتایج حاکی از آن بود استفاده از غلظت ppm 75 در زمان­های1، 3، 5 و 7 روز سبب تغییرات اکسیداتیو معنی­داری در خصوصیات روغن(افزایش شاخص­ اسیدیته) و نشاسته (افزایش شاخص کربوکسیل) دانه ذرت نسبت به نمونه شاهد شده است. همچنین شرایط مختلف ازن­دهی تا غلظت ppm 50 در زمان­های مختلف تاثیر معنی­داری بر میزان پروتئین دانه ذرت نداشت (05/0>P).

کلیدواژه‌ها
ازن‌دهی
دانه ذرت
ویژگی‌های کیفی و میکروبی

موضوعات

عنوان مقاله English

Evaluating the effect of ozone gas on the qualitative and microbial characteristics of corn seeds

نویسندگان English

Jalal Mohammadzadeh 1
Javad Zanganeh 2
1 Agricultural Engineering Research Department Golestan Agricultural and NaturalResources Research Center, AREEO, Gorgan, Iran
2 The Golestan University of Medical Science, Cereal Health Research Center
چکیده English

Corn production rank is second among cereals after wheat crop, and usually, a large part of it is not used immediately after harvesting but is kept in storage for gradual use in other seasons or exported to other regions. The spread of different types of fungi and the production of fungal toxins, especially in areas with high humidity, in addition to quantitative and qualitative damage to stored products, cause an increase in waste and endanger the health of society. To replace the low-risk methods of increasing the storage life, in this research, the effect of ozone gas with two variables of ozone concentration; (25, 50, and 75 ppm) in the duration of ozonation (1, 3, 5, and 7 days) on the dominant corn grain (Single cross number 407) in Golestan region, was evaluated. The microbial characteristics were compared with the control sample in terms of controlling the spread of fungi and changes in the seed qualitative aspects. The results showed that increasing the ozone concentration up to 50 ppm and the ozonation time of 3 days had a significant effect on reducing the growth of fungi and the production of aflatoxin (P<0.05). Also, the results indicated that the use of 75 ppm concentration in 1, 3, 5, and 7 days had caused significant oxidative changes in the characteristics of fat (increased acidity indices) and starch (increased carboxyl index) of corn kernels compared to the control sample. Different conditions of ozonation up to the concentration of 50 ppm at varying times did not have a significant effect on the amount of corn seed protein (P<0.05).

کلیدواژه‌ها English

Corn
Ozonation
Qualitative and microbial characteristics
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