Jincheng orange(Citrus sinensis Osbeck)is widely grown in Chongqing,China,and is commonly consumed because of its characteristic aroma contributed by the presence of diverse volatile compounds.The changes in aroma dur...Jincheng orange(Citrus sinensis Osbeck)is widely grown in Chongqing,China,and is commonly consumed because of its characteristic aroma contributed by the presence of diverse volatile compounds.The changes in aroma during the development and maturation of fruit are indicators for ripening and harvest time.However,the influence of growth stages on the volatile compounds in Jincheng orange remains unclear.In addition,volatiles originate from fatty acids,most of which are the precursors of volatile substances.On this basis,gas chromatography-mass spectrometry(GC-MS)was performed to elaborate the changes in volatile constituents and fatty acids as precursors.This study tested proximately 60 volatiles and 8 fatty acids at 9 growth and development stages(AF1-AF9).Of those compounds,more than 92.00%of total volatiles and 87.50%of fatty acids were terpenoid and saturated fatty acids,respectively.As shown in the PCA plot,the AF5,AF6,and AF9 stages were confirmed as completely segregated and appeared different.In addition,most of the volatiles and fatty acids first increased at the beginning of the development stage,then decreased from the AF6 development stage,and finally increased at the AF9 maturity stage.Moreover,the highest contents of terpenoid,alcohols,aldehydes,ketones,and saturated fatty acids in Jincheng orange peel oil were d-limonene,linalool,octanal,cyclohexanone,and stearic acid during development stages,respectively.Our results found that the growth stages significantly affected the volatile constituents and precursors in Jincheng orange peel oil.展开更多
1 Introduction The Tongbai-Dabie area has experienced multistage plate subduction-collision activities,resulting in the development of a series of nearly EW-trending ductileshear zones with different levels,scales,and...1 Introduction The Tongbai-Dabie area has experienced multistage plate subduction-collision activities,resulting in the development of a series of nearly EW-trending ductileshear zones with different levels,scales,and characteristics(Wu et al.,2012).These ductile shear zones have controlled the northern Tongbai-Dabie展开更多
A Chinese motorcycle giant roars into the international market When contemplating buying a motorcycle, people in some African and Latin American countries in recent years have suggested, "Let's buy a Jincheng...A Chinese motorcycle giant roars into the international market When contemplating buying a motorcycle, people in some African and Latin American countries in recent years have suggested, "Let's buy a Jincheng." In those countries, Jincheng has become synonymous with motorcycles. Based in Nanjing, Jincheng Group specializes in manufacturing and selling airborne equipment, motorcycles and engineering hydraulic pressure equipment,展开更多
On April 9, a signing ceremony of joint venture contract for establishing ZF Steering Jingcheng (Nanjing) Co., Ltd. between Nanjing based Jincheng (Group) Co., Ltd. and ZF Lenksysteme GmbH of Germany was held in Nanji...On April 9, a signing ceremony of joint venture contract for establishing ZF Steering Jingcheng (Nanjing) Co., Ltd. between Nanjing based Jincheng (Group) Co., Ltd. and ZF Lenksysteme GmbH of Germany was held in Nanjing city, capital of Jiangsu province. The establishment of the setup specially engaged展开更多
基金supported by the Guizhou Provincial Science and Technology Projects,China(ZK[2022]391)the Cultivation Project of National Natural Science Foundation of Guizhou Medical University,China(21NSFCP20).
文摘Jincheng orange(Citrus sinensis Osbeck)is widely grown in Chongqing,China,and is commonly consumed because of its characteristic aroma contributed by the presence of diverse volatile compounds.The changes in aroma during the development and maturation of fruit are indicators for ripening and harvest time.However,the influence of growth stages on the volatile compounds in Jincheng orange remains unclear.In addition,volatiles originate from fatty acids,most of which are the precursors of volatile substances.On this basis,gas chromatography-mass spectrometry(GC-MS)was performed to elaborate the changes in volatile constituents and fatty acids as precursors.This study tested proximately 60 volatiles and 8 fatty acids at 9 growth and development stages(AF1-AF9).Of those compounds,more than 92.00%of total volatiles and 87.50%of fatty acids were terpenoid and saturated fatty acids,respectively.As shown in the PCA plot,the AF5,AF6,and AF9 stages were confirmed as completely segregated and appeared different.In addition,most of the volatiles and fatty acids first increased at the beginning of the development stage,then decreased from the AF6 development stage,and finally increased at the AF9 maturity stage.Moreover,the highest contents of terpenoid,alcohols,aldehydes,ketones,and saturated fatty acids in Jincheng orange peel oil were d-limonene,linalool,octanal,cyclohexanone,and stearic acid during development stages,respectively.Our results found that the growth stages significantly affected the volatile constituents and precursors in Jincheng orange peel oil.
文摘1 Introduction The Tongbai-Dabie area has experienced multistage plate subduction-collision activities,resulting in the development of a series of nearly EW-trending ductileshear zones with different levels,scales,and characteristics(Wu et al.,2012).These ductile shear zones have controlled the northern Tongbai-Dabie
文摘A Chinese motorcycle giant roars into the international market When contemplating buying a motorcycle, people in some African and Latin American countries in recent years have suggested, "Let's buy a Jincheng." In those countries, Jincheng has become synonymous with motorcycles. Based in Nanjing, Jincheng Group specializes in manufacturing and selling airborne equipment, motorcycles and engineering hydraulic pressure equipment,
文摘On April 9, a signing ceremony of joint venture contract for establishing ZF Steering Jingcheng (Nanjing) Co., Ltd. between Nanjing based Jincheng (Group) Co., Ltd. and ZF Lenksysteme GmbH of Germany was held in Nanjing city, capital of Jiangsu province. The establishment of the setup specially engaged
