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Some physico-chemical attributes of pear (Pyrus communis L.) cultivars grown in Pakistan

Shehzad Hussain, Tariq Masud, Sartaj Ali, Rahat Bano, Amjad Ali

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Int. J. Biosci.3(12), 206-215, December 2013

DOI: http://dx.doi.org/10.12692/ijb/3.12.206-215


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Four pear (Pyrus communis L.) cultivars grown in District Hunza-Nagar, Gilgit-Baltistan, locally called Shughri, Batung, Puno-Batung and Phycho were analyzed for their physio-chemical and functional attributes. Physico-chemical characteristics of the tested genotypes revealed variable amounts of moisture (80.17-86.67%), crude fiber (5.10-10.00%), ash (1.56-1.83%), total soluble solids (11.03-14.42oBrix), total sugars (10.19-11.12%), pH (4.12-5.24) and titratable acidity (0.12-0.26% in terms of malic acid) respectively. Similarly, ascorbic acid was established in the range of 2.80-4.30 mg/100g, total phenolic content 29.13-38.87 mg GAE/100g and antioxidant activity from 29.36-46.73% among the investigated genotypes. Some mineral estimation (mg/100g) was also carried out which showed reasonable concentrations of K (163.27-833.85), Mg (38.57-86.74), Ca (23.26-48.39), P (5.20-13.70), Na (0.95-4.19) and Fe (0.40-2.86) in the tested cultivars. Physical and geometric dimensions such as fruit length ranged from 40.10 to 87.50 mm, width 36.22 to 68.85 mm, thickness 37.36 to 73.80 mm, geometric mean diameter 37.71 to 74.69 mm, volume 22.33 to 227.4 cm3, surface area 4468 to 17527 mm2, sphericity 84.20 to 89.90 % and fruit weight ranged from 35.11 to 231.96 g. The findings of this study showed that Shughri and Phycho grown in both locations were rich in functional components and mineral contents, while, Batung and Puno-Batung were prominent in physical and geometric traits.


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Some physico-chemical attributes of pear (Pyrus communis L.) cultivars grown in Pakistan

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