000			02949nab a22004337a 4500
001			G78972
003			MX-TxCIM
005			20220616202210.0
008			220616s2003 cc |||p|op||| 00| chi d
022			_a0496-3490
040			_aMX-TxCIM
041			_achi
072		0	_aA50
072		0	_aF30
090			_aCIS-3936
100	0		_aGe Xiu-xiu _920745
245	1	0	_aPolyphenol oxidase activities of Chinese winter wheat cultivars and correlations with quality characteristics
260			_aBeijing (China) : _bScience Press, _c2003.
340			_aPrinted
500			_aAbstract in Chinese and English.
500			_aPeer-review: No - Open Access: Yes|http://211.155.251.148:8080/zwxb/EN/column/column81.shtml
500			_aPeer review
500			_aOpen Access
520			_aThe enzyme polyphenol oxidase( PPO) has been related to undesirable brown discoloration of wheat based end products such as noodles. 164 cultivars from winter wheat region in China were used to screen grain PPO activity , and 83 cultivars were used to determine flour PPO activity and other quality characteristics. Two sets of wheat samples were used to investigate the effects of genotype, environment and their interaction on grain and flour PPO activity. Significant differences in grain and flour PPO activity were observed in the China winter wheat populations. Grain PPO activity among China winter wheats ranged from 1. 93 to 12. 00 A475/ g min - 1 ×103, and flour PPO activity ranged from 0. 22 to 3. 74 A475/ g min - 1 × 103. The variability in grain and flour PPO activities was influenced by growing location and genotype for the winter wheat samples. The variation in grain and flour PPO activities among growing locations appeared smaller than variation produced by genotypes for the winter wheat samples except for soft wheat flour PPO. Flour PPO activities were related to L3 of flour and 24 h fresh noodle sheets , correlation coefficients were - 0. 50 and - 0. 59 respectively. Quality parameters , such as grain hardness , milling yield , flour protein , water absorption and falling number significantly Correlated with flour PPO activities. Test weight, TKW , grain hardness and flour yield affected PPO content through changing bran content, while protein and starch affected PPO activities.
536			_aGlobal Wheat Program
546			_aChinese
591			_a0402|AL-Wheat Program
594			_aINT2411
595			_aCSC
650		7	_aTriticum aestivum _2AGROVOC _91296
650		7	_aCatechol oxidase _2AGROVOC _93030
650		7	_aProcessing quality _2AGROVOC _99916
700	1		_aHe Zhonghu _gGlobal Wheat Program _8INT2411 _9838
700	0		_aYang Jin _927833
700	0		_aQijun Zhang _923167
773	0		_tActa Agronomica Sinica _n632743 _gv. 29, no. 4, p. 481-485 _dChina : Science Press, 2003. _wG446116 _x0496-3490
856	4		_uhttps://hdl.handle.net/10883/21377 _yOpen Access through DSpace
942			_cJA _2ddc _n0
999			_c24564 _d24564