With Hongli Feicheng Peach as the test material, the effects of bagging with 4 kinds of paper bags and 3 kinds of non-woven bags on the soluble sugar, organic acids and aroma compounds in peach fruits were investigate...With Hongli Feicheng Peach as the test material, the effects of bagging with 4 kinds of paper bags and 3 kinds of non-woven bags on the soluble sugar, organic acids and aroma compounds in peach fruits were investigated using headspace solid-phase microextraction （HS-SPME） combined with gas chromatogra- phy-mass spectrometry （GC-MS） and high-performance liquid chromatography （HPLC）. The results showed that there were significant differences in sugar and acids contents of peach fruits between different bagging treatments. The sugar con- tent of peach fruits was increased when bagged with single-layer inner-black outer- yellow paper bags and double-layer inner-white outer-yellow paper bags. The organ- ic acid content in peach fruits bagged with all the types of bags except the single- layer inner-black outer-yellow paper bag was increased greatly. The count and rela- tive content of aroma compounds were all decreased after bagging. Combined with the detection results of soluble sugar, organic acids and aroma compounds, the sin- gle-layer inner-black outer-yellow paper bag was suitable for bagging of Hongli Fe- icheng peach.展开更多
bjectives. To investigate the role of endogenous heme oxygenase (HO)/carbon monoxide (CO) system in regulating the process of intussusception (IN) induced by administration of lipopolysaccharide (LPS) in rats. Methods...bjectives. To investigate the role of endogenous heme oxygenase (HO)/carbon monoxide (CO) system in regulating the process of intussusception (IN) induced by administration of lipopolysaccharide (LPS) in rats. Methods. IN model of rats were induced by lipopolysaccharide. HO activity was determined by the amount of bilirubin formation which was measured with a doublebeam spectrophotometer, and HbCO formation was measured by COoximeter. Results. The results showed that LPS (10mg/kg) caused IN in up to 40% of the rats at 6h after treatment of LPS. The incidence of IN were significantly increased by 50% (P<005) and by 832%(P<001) in HO substrate(hemeLlysinate)treated rats and in exogenous COtreated rats, respectively; but it was significantly decreased by 418%(P<005) after administration of ZnDPBG, an inhibitor of heme oxygenase (HO) activity. Furthermore, LPS increased HO activity, HbCO formation cGMP content within colic smooth muscle and the plasma level of cGMP, and these parameters were significantly elevated by 626%(P<001), 400%(P<001), 493%(P<005) and 38%(P<005), respectively, compared with LPSnonIN rats. Conclusion. It is suggested that endogenous HO/CO system plays an important role in the process of IN induced by LPS, and inhibition of HO activity may decrease the formation of IN.展开更多
基金Supported by National Peach Industrial Technology System(CARS-31-Z-09)Project for Research on Quality and Efficiency Improvement and Standardized Key Production Technology of Excellent and Special Fruit in Shandong Province(2014CXZ04-1)+1 种基金National Rural Areas Project Application in the 12~(th) Five-Year Period(2013BAD02B03)Key Science and Technology Innovation Project of Shandong Academy of Agricultura Sciences(2014CXZ11-4)~~
文摘With Hongli Feicheng Peach as the test material, the effects of bagging with 4 kinds of paper bags and 3 kinds of non-woven bags on the soluble sugar, organic acids and aroma compounds in peach fruits were investigated using headspace solid-phase microextraction （HS-SPME） combined with gas chromatogra- phy-mass spectrometry （GC-MS） and high-performance liquid chromatography （HPLC）. The results showed that there were significant differences in sugar and acids contents of peach fruits between different bagging treatments. The sugar con- tent of peach fruits was increased when bagged with single-layer inner-black outer- yellow paper bags and double-layer inner-white outer-yellow paper bags. The organ- ic acid content in peach fruits bagged with all the types of bags except the single- layer inner-black outer-yellow paper bag was increased greatly. The count and rela- tive content of aroma compounds were all decreased after bagging. Combined with the detection results of soluble sugar, organic acids and aroma compounds, the sin- gle-layer inner-black outer-yellow paper bag was suitable for bagging of Hongli Fe- icheng peach.
文摘bjectives. To investigate the role of endogenous heme oxygenase (HO)/carbon monoxide (CO) system in regulating the process of intussusception (IN) induced by administration of lipopolysaccharide (LPS) in rats. Methods. IN model of rats were induced by lipopolysaccharide. HO activity was determined by the amount of bilirubin formation which was measured with a doublebeam spectrophotometer, and HbCO formation was measured by COoximeter. Results. The results showed that LPS (10mg/kg) caused IN in up to 40% of the rats at 6h after treatment of LPS. The incidence of IN were significantly increased by 50% (P<005) and by 832%(P<001) in HO substrate(hemeLlysinate)treated rats and in exogenous COtreated rats, respectively; but it was significantly decreased by 418%(P<005) after administration of ZnDPBG, an inhibitor of heme oxygenase (HO) activity. Furthermore, LPS increased HO activity, HbCO formation cGMP content within colic smooth muscle and the plasma level of cGMP, and these parameters were significantly elevated by 626%(P<001), 400%(P<001), 493%(P<005) and 38%(P<005), respectively, compared with LPSnonIN rats. Conclusion. It is suggested that endogenous HO/CO system plays an important role in the process of IN induced by LPS, and inhibition of HO activity may decrease the formation of IN.
