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Background: Beijing You-chicken with a unique flavor and rich nutrition is an excellent local chicken breed in China. Clarifying the change of volatile odor during the storage of chicken is helpful to assist in judging the freshness of chicken. Methods: The total viable count (TVC), total volatile basic nitrogen (TVB-N), lightness value L* and thiobarbituric acid reactive rubstances (TBARS) of chicken breast were measured at 4C and 25C, respectively. And the electronic nose and gas chromatography mass spectrometry (GC-MS) technology were used to determine the changes of volatile compounds during storage. Result: Significant changes of the volatile compounds were observed on first day at 25C and the 8th day at 4C of storage, which agreed with the results evaluated by detection of physicochemical indicators. The results of this study could serve as a theoretical basis for future research on detecting changes in chicken freshness by using the electronic nose and GC-MS technology. [ABSTRACT FROM AUTHOR]

China has about 107 local chicken breeds and is considered one of the richest countries in terms of genetic resources. This diversity is a source of richness natural resources across the globe and is regarded as an excellent material for genetic improvement of breeds or breeding new breeds around the world. The present review highlights the recent evidence and studies of chicken origin and domestication in China and Southeast Asia. The evidence of molecular genetics and archeological results supported that multiple regions and event were contributed to the creation of chicken evolution from Red Jungle fowl and the findings proposed that one of events happened in domestication of chicken 8000 BP in Southeast of Asia. Several researchers confirmed that China was declared as most important of the world as a first centers for the chicken’s domestication and these chickens have remained in many archaeological sites in China. [ABSTRACT FROM AUTHOR]