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Articles by Shehla Sammi
Total Records ( 5 ) for Shehla Sammi
  Habib Ahmed Rathore , Tariq Masud , Shehla Sammi and Saima Majeed
  Effect of polyethylene packaging and coating having fungicide, ethylene absorbent and antiripening agent on the physico-chemical composition such as weight loss, Total Soluble Solids (TSS), pH, Titratable Acidity (TA) and Ascorbic Acid (AA) of Chaunsa white commercial variety of mango was investigated at ambient temperature (28-33oC and 56.7-69.7% relative humidity) during storage. It was examined that uncoated fruit packed in polyethylene or coating emulsions having fungicide, ethylene absorbent and antiripening agent had significant effect (p<0.05) on overall physico-chemical constituents of Chaunsa at ambient temperature during storage. It was investigated that treated fruit packed in polyethylene had minimum weight loss ranged from 1.92-3.98 %, lower TSS (15.17-18.43%), lower pH (3.88-4.4), higher retention of TA (0.81-0.97%) and lower AA (19.81-30.91 mg/100 g) with an average mean of 3.20, 15.84, 3.99, 0.87 and 24.48 respectively at ambient temperature during storage. On the other hand the control (T1) had highest weight loss (9.39%), TSS (20.83%), pH (4.91), lowest TA (0.44%) and highest AA (42.06 mg/100 g) respectively during storage. The coated fruit packed in polyethylene had minimum weight loss, slower increase of TSS, pH, higher retention of acidity and slower increase in AA respectively of fruit during the storage period. Whereas, fruit packed only in polyethylene had lowest weight loss, higher TSS, pH, highest retention of acidity and higher AA respectively. It is obvious from these studies that coated fruit having other protective chemicals when packaged in polyethylene had played a very effective role to control compositional changes by delaying the ripening process and with a minimum quality loss during 30 days of storage at ambient temperature, as compared to the control sample that had greater compositional changes with maximum quality loss during storage at ambient temperature. The control fruit were unacceptable after 12 days of their storage due to its unattractive skin, brown pulp color and poor taste as compared to treated fruit having good keeping quality even after one month of their storage.
  Habib Ahmed Rathore , Tariq Masud , Shehla Sammi and Eijaz Hussain Soomro
  Polyethylene packaging and Pre-treatments had significant effect (p<0.05) on overall chemical constituents such as reducing and non-reducing sugars (RS, TIS, SUC) Total Sugars (TS), Sugar Acid Ratio (SAR) and other organoleptic parameters like; Skin Color (SKC), Flesh Color (FLC), Texture (TEX), Taste (TAS) and Flavour (FLA) of Chaunsa white variety of mango fruit at ambient temperature (28-33oC and 56.7- 69.7% relative humidity) during storage. It was investigated that fruit treated with coating emulsions having fungicide, ethylene absorbent and antiripening agent, packed in polyethylene had lower RS ranged from (8.35-10.70%), TIS (17.78-24.66), SUC (9.07-13.75), TS (17.31-23.93), SAR value (25.31-39.79), lower SKC (.3.83-4.88), FLC (3.84-4.50), TEX (5.05-5.68), TAS (3.21-4.28) and FLA (3.74-4.76) with an average mean of 9.07%, 20.95%, 10.80%, 20.06%, 26.31, 3.93, 4.08, 5.20, 3.70 and 4.09 respectively at ambient temperature during 30 days of storage. The coated fruit packed in polyethylene had longer shelf life, minimum quality loss and slower increase in RS, TIS, SUC, TS contents, SAR, or lower score of SKC, FLC, TAS, higher TEX and slower increase of FLA respectively of fruit during storage. Whereas, the control sample had greater compositional changes with maximum quality loss, higher RS (9.67%), TIS (28.51%), SUC (19.83%), TS (29.38%), SAR (103.60), SKC (5.82), FLC (4.56), TAS (4.67), FLA (4.81) and lower TEX (4.98) and fruit was unacceptable after 12 days of their storage due to its unattractive skin, brown pulp color and poor taste.
  Habib Ahmed Rathore , Tariq Masud , Shehla Sammi and Saima Majeed
  Significant effect (p<0.05) of Innovative approach of Active packaging in Cardboard Carton (APCC) on overall quality attributes such as weight loss, Total Soluble Solids (TSS), pH, Titrate-able Acidity (TA) and Ascorbic Acid (AA) contents of Chaunsa white variety of Mango was investigated at ambient temperature (28-33oC and 56.7-69.7% relative humidity) during storage. It was observed that the uncoated fruit packed in carton had comparatively higher percent weight loss (10.96%) than control (9.39%); however, after application of APCC system same packaging had significantly reduced the percent weight loss up to (6.89%). It was also noted that mango fruit undergone through APCC system showed a slower increase of TSS (16.44-20.76%), pH (3.98-4.83), slower decrease in TA (0.51-0.92%), or slower increased of AA (23.06-40.83 mg/100 g) during ripening with an average mean of 8.10%, 17.73%, 4.28, 0.75%, 25.47 mg/100 g respectively at later stage of storage as compared to control sample (T1) had higher weight loss (9.39%), TSS (20.83%), highest pH value (4.91), lowest acidity (0.44%), highest AA (42.06 mg/100 g), respectively at much earlier during storage. It is clear from these studies that Innovative approach of APCC with other protective chemicals such as coating emulsions having fungicide, ethylene absorbent and anti-ripening agent had extended storage life up to 25 days and played a very effective and vital role to control compositional changes by delaying the ripening process and with a minimum quality loss, as compared to control sample had greater compositional changes with maximum quality loss during storage at ambient temperature. Due to unattractive skin, brown pulp color and poor taste the control fruit was unacceptable within two weeks of their 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.
  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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