Abstract
The commercial value of Kurles pears pericarp, a popular and favored fruit for its unique aroma and refreshingly crisp texture, had sharply decreased because of a rust breakout of the beloved pear in China during the atmosphere-controlled storage. High performance liquid chromatography (HPLC) and liquid chromatography-mass spectrometry (LC-MS) were used to analyze rust spots on the pericarp of Kurle pears. Therefore, the chemical compounds of four various eluates, originating from the rust-colored substance collected from the pears pericarp effected, were identified successfully for the first time, which were just rhein, aloe-emodin, chrysophanol and emodin, respectively. Taken together with microstructure characteristics for rust-spots of Kurle pear pericarp, it was no doubt that these eluates were the main factors affecting the rust spots on the pericarp of the Kurle pears during the atmosphere-controlled storage, which was a sign and consequence resisting the undesirable stress of the external environment.
Footnotes
Fund program: This work was supported by not only National Nature Science Foundation of China (30860181 and 31560468), but also 12th Five-Year Degree Authorized Construction Discipline in Biology of Yunnan Province, the Superior and Characteristic Discipline in Biology of Chuxiong Normal University (05YJJSXK03), University-level Academic Backbone Training Project for Chuxiong Normal College (XJGG1603), key major construction projects on “biotechnology” for Chuxiong Normal College.
Author: NAN Lijun (1973-), Man, Doctor, Research direction was focused on the grape physiology and wine production, E-mail: submit_paper73{at}126.com.