Influence of high-dose gamma radiation and particle size on antioxidant properties of Maize (Zea mays L.) flour
نویسندگان
چکیده
Influence of high-dose gamma radiation and particle size on antioxidant properties of maize (Zea mays L.) flour was studied using response surface methodology. A central composite design based on three levels of each of particle size, in terms of mesh number (40, 60 and 80 meshes), and gamma radiation dose (25, 50 and 75 kGy) was constructed. A statistically significant dose-dependent decrease (p<0.05) in antioxidant properties of gamma irradiated flour was observed. However, an increase in the mesh number (decrease in particle size of flour) resulted in an increase in antioxidant properties. The optimum level of radiation dose to achieve maximum value of responses was found to be 50 kGy for Trolox equivalent total antioxidant activity (TETAOA), 25 kGy for iron chelating ability (ICA), 25 kGy for reducing power (RP) and 75 kGy for linoleic acid reduction capacity (LARC). However, the optimum level of mesh number to achieve desired levels of TETAOA, ICA, RP and LARC was found to be 80 meshes.
منابع مشابه
Effect of chitosan on antioxidant enzyme activity, proline, and malondialdehyde content in Triticum aestivum L. and Zea maize L. under salt stress condition
Triticum aestivum L. and Zea maize L. are both sensitive to salinity stress which is a major problem faced by farmers today. In the present study, the effect of chitosan, a biologic elicitor under salinity stress was examined on growth parameters and biochemical markers in maize and wheat s...
متن کاملEffects of aluminum toxicity on maize (Zea mays L.) seedlings. Parviz Malekzadeh1*, Reza Sheikhakbari Mehr1 and Ali Asghar Hatamnia2
Aluminum toxicity is one of the most deleterious factors for plant growth in acidic soils because over 50% of the world’s potentially arable lands are acidic. In recent years, considerable research has been conducted to understand the mechanisms of Al toxicity and tolerance in plants. This paper reviews the effects of different concentration of Al on plant shoot, root physiological parameters s...
متن کاملDegree of salt tolerance in some newly developed maize (Zea mays L.) varieties. Maria Zahoor*, Rehana Khaliq, Zafar Ullah Zafar and Habib-ur-Rehman Athar
Salinity is a major abiotic-stress worldwide which decreases crop growth productivity. The objective of the present study was to investigate whether salt stress has adverse effects on growth, photosynthetic efficiency, biochemical properties and nutrient status of maize. An experiment was carried out with seeds of four varieties of maize which were allowed to germinate for one week. Afterwards,...
متن کاملBanding Patterns Activity of Antioxidant Enzymes and Physiological Indices in the Maize (Zea mays L.) Genotypes under Water Deficit Stress
Extended Abstract Introduction and Objective: Various environmental stresses, especially water deficit stress have several and major effects on maize growth and production. Drought is one of the abiotic stresses that due to the great variety of rainfall conditions, it is known from Iran as the most important factor limiting the growth and production of crops. Therefore, the effect of water def...
متن کاملAgrobacterium Mediated Transformation of Maize (Zea mays L.)
Agrobacterium tumefaciens mediated transformation may offer a better alternative than the biolistic gun for genetic transformation of maize plants. This gene delivery system results in a greater proportion of stable, low-copy number transgenic events than does the biolistic gun, and is highly efficient. In the present work, we studied maize transformation using A. tumefaciens by identifying som...
متن کامل