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Articles by Zakir Ullah
Total Records ( 2 ) for Zakir Ullah
  Muhammad Amir Zia , Fazal Hadi , Haji Akbar , Fazal Akbar , Zakir Ullah and Israr Khan
  This research was conducted to characterize B. napus seeds and to compare seeds of different varieties for their compositions. The seeds of ten different Brassica napus varieties namely Cyclon, Star, Vangard, MLCP-048, Bullet, Altex, Con-III, Deffender, Hyola and Dunkled were analyzed for parameters like, pH, electrical conductivity and thousand seed mass. Minerals (Na+ and K+), vitamin C and protein contents were also analyzed. Na+ and K+ were determined by Flame photometer and proteins were analyzed by SDS-PAGE (Sodium dodecyl sulfate polyacrylamide gel electrophoresis). The amount of sodium ranges from 0.020-0.039%. The lowest value of sodium was found in Vangard and the highest in Cyclone. While potassium ranges from 1.14-1.42% with the lowest value for Bullet and the highest for Star. Vitamin C was found in all the varieties in range of 30-96 mg/100 g. The maximum amount of vitamin C was found in Bullet variety while minimum concentration in MLCP-048. Maximum value of pH (6.933) was recorded for MLCP-048, while minimum value for Altex 6.632. The thousand seed mass for cyclone was 5.52 g that was maximum and the lowest value was for bullet variety (3.63 g). Electrical conductivity for different varieties was estimated after different time intervals (20, 40, 60, 80, 100 and 120 min). The overall electrical conductivity determined by conductometer ranged from 0.9-10.4 μ sec. Seeds proteins were analyzed by SDS-PAGE and different numbers of bands showed that variation existed among the different varieties.
  Ghazal Mairaj , Saeed Akhtar , Arbab Riaz Khan , Zakir Ullah , Saiqa Bibi and Sajid Ali
  The present study was designed to evaluate different honey samples obtained from local market for their quality parameters for assessment of their feasibility for foreign export by comparing it with international standards. The study was conducted at PCSIR laboratories complex, Peshawar, during 2006. The tested samples were evaluated for moisture content, Ash percentage, acid content, HMF and reducing sugars percentage. The moisture content of locally produced honey was in the range of 14.5 to 18.23%. The ash content of locally produced honey samples ranged between 0.047-0.35 which is within the standard limits. The acid content of the honey samples ranged between 19.5 and 38.0 meq kg-1. The HMF contents of locally produced honeys ranged from 5.3 to 23.20 mg kg-1. The content of reducing sugar of the tested samples ranged between 43.14 and 81.40% for the tested samples of locally produced honey. All of the samples were found to be in acceptable range of international standards for all of the tested parameters except for only one sample with lower reducing sugars. These samples were marked to be according to the international standards and are healthy for human consumption.
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