PJB-2019-401
Determination of soluble sugars in fresh market Oregon strawberries by HPLC at harvest and after two weeks of cold storage
Dr, Ijaz Akhtar
Abstract
Selected soluble sugars were analyzed in six Oregon strawberry genotypes and two cultivars at harvest and after two weeks of cold storage by High Performance Liquid Chromatography. The strawberry genotypes and cultivars were grown at the North Willamette Research and Extension Center in Aurora, Oregon, USA. The sugars analysis by HPLC was conducted at Food Science and Technology Department, Oregon State University, Corvallis, Oregon, USA. Fructose and glucose were found to be the predominant sugars in all strawberry genotypes and cultivars. The average amount of sucrose, glucose, xylose and fructose were 3.1, 30.2, 7.4 and 46.5 g/kg respectively in advance genotypes and cultivars of strawberry at harvest while 2.2, 33.4, 7.6 and 49.5 g/kg were recorded at storage. The maximum sucrose (4.9), glucose (49), xylose (8.6) and fructose (60 g/kg) were recorded by ORUS 2427-4, hood, albion and hood respectively at harvest while 3.6, 54.1, 8.9 and 63.5 g/kg at storage. The minimum sucrose (1.4), glucose (13), xylose (6.4) and fructose (38 g/kg) were recorded by ORUS 2427-1, ORUS 2240-1, ORUS 2493-2 and ORUS-2493-2 respectively at harvest while 0.7, 16.2, 6.5 and 40.5 g/kg at storage.
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