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Articles by Sartaj Ali
Total Records ( 4 ) for Sartaj Ali
  Saira Ishaq , Habib Ahmed Rathore , Tariq Masud and Sartaj Ali
  The effect of different concentrations of CaCl2 (1, 2 and 3%) with the combination of oxidizing agent like Potassium permanganate (KMnO4) on storage life of apricot fruit packaged in sealed Polyethylene bags was investigated at ambient temperature (Relative humidity 60-63% and temperature 28-30oC) during storage. The quality characteristics such as weight loss, total soluble solids, titratable acidity, ascorbic acid and sensory parameters like color, texture, taste, flavour and overall acceptability were studied at an interval of 2 days (0, 2nd, 4th, 6th, 8th and 10th day) for a total period of 10 days during storage. All of the 9 treatments had shown a highly significant effect (p<0.05) on storage life and quality parameters of fruits. However, the treatment T4 (KMnO4 + 3% CaCl2 + Polyethylene bags) was most effective in the retention of higher contents of vitamin C (11.47 mg/100 g), total soluble solids (12.58%), titratable acidity (0.72%) and sensory parameters like colour (4.97), texture (6.23), taste (6.52), flavour (6.38) and the higher overall acceptability score (6.72) with minimum weight loss (3.66%) in T4. Compared to control fruit showed maximum weight loss (9.5%), lower vitamin C (9.55 mg/100 g), titratable acidity (0.67%), total soluble solids (10.58%) and lower quality score like colour (3.92), texture (4.83), taste (4.79), flavour (4.43) and the lower score (4.6) of overall acceptability during storage whereas the Treatment T3 (3% CaCl2+Polyethylene bags) was found better to all other treatments during storage. The treated apricot fruit have increased storage life up to 10 days as compared to control which was un acceptable after 6th day of the storage.
  Kashif Sarfraz Abbasi , Nuzba Anjum , Shehla Sammi , Tariq Masud and Sartaj Ali
  In order to identify and compare the effects of different concentrations of coatings (Carboxy Methyl Cellulose, CaCl2, Bee wax) and packaging (polyethylene sheet), on improving the keeping quality of mangoes its storage performance was evaluated. Mangoes after harvesting were given hot water treatment at 50±2oC for three minutes as quarantine measure against fungal attack. Then fruits were coated with three different concentrations of CMC and CaCl2 along with bee wax coating and polyethylene sheet packaging. All the treatments were applied in combination with KMnO4 soaked with sponge cubes used as ethylene absorbents. Fruits were kept at refrigerated temperature for 80 days and evaluated for physico-chemical and sensory changes at an interval of seven days. All coatings delayed fruit ripening and improved the keeping quality of the produce but best results were exhibited by Carboxy Methyl Cellulose (CMC) at 2% level. It extended storage life up to 77 days with appreciable retention of all the quality parameters.
  Sartaj Ali , Tariq Masud , Kashif S. Abbasi , Talat Mahmood and Ijlal Hussain
  Fresh fruits are increasingly focused in the recent years for their nutritional and health benefits. Research involving simple and safe preservation technologies is at a high demand to satisfy consumer concerns and harvest maximum market potential. The present study was therefore undertaken to assess the response of chemical and bioactive compounds (pH, acidity, ascorbic acid, total phenolics, carotenoids, free radical scavenging capacity and enzyme activity) in apricot under the effect of calcium treatments (1, 2, 3 and 4%) at ambient storage. The results revealed that ascorbic acid, phenolic compounds and carotenoids were least affected in 3 and 2% calcium as compared to control, 1 and 4% CaCl2. Similarly, higher antioxidant capacity and lower enzymatic activity was retained in the same concentrations. Titratable acidity and ascorbic acid decreased in all treatments during storage and higher reduction was observed in control, 1 and 4% as compared to 3 and 2% calcium, respectively. pH, phenolics, carotenoids, antioxidant and enzymatic activity increased initially and it was rapid up to 6th day, followed by a slight decrease during subsequent storage. The overall results demonstrated higher compositional losses in control followed by 1 and 4% calcium treated fruits, while 3 and 2% treatments exerted pronounced effects on keeping quality of apricot during ambient storage up to 12th day.
  Sadaf Javeria , Tariq Masud , Shehla Sammi , Saima Tariq , Asma Sohail , Shahid Javed Butt , Kashif Sarfraz Abbasi and Sartaj Ali
  Beta carotene is a precursor of Vitamin A and is abundantly found in different vegetables and possess significant anti-oxidant potential. In the present study an attempt was made to determine the concentration of β-carotene from different vegetables sources viz carrots, corn, paprika and pumpkin. After the extraction its concentration was quantified by using spectrophotometer and the data was statistically analyzed. The results expressed that corn had highest amount of β-carotene (31%) followed by paprika (25%) then carrots (24%) and pumpkin (20%). This study provides a base line for extraction of costly β-carotene from local vegetable that can overcome the problem for the import β-carotene. Other findings revealed significant potential of this compound from indigenous sources and also found cheaper than the synthetic sources.
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