Based on the Analysis and Imaging of Low Field Nuclear Magnetic Resonance,Explore the Influence of Chestnut Moisture Migration to the Change of Its Texture in the Storage Process

In order to explore the effect of water migration on the quality of chestnut,taking the Canggeng chestnut produced in Guizhou province as test materials and applying the LF-NMR,TPA detection technology,explore the moisture content,the change of moisture state,texture and their correlation during the process of the chestnut storage.The result shows:The Canggeng chestnut produced in Guizhou possesses high kernel yield. Chestnut contains bound water,immobilized water and free water. To stabilize the internal structure of Chestnut,some immobilized water convert to bound water and another immobilized water convert to free water during the process of the chestnut storage. The moisture content in Canggeng chestnut produced in Guizhou province had a prominent positive correlation with chestnut texture index cohesiveness and springiness,immobilized water in chestnut moisture had a prominent positive correlation(P<0.05)with its cohesiveness and springiness,chestnut free water had a prominent positive correlation with its springiness,the change of chestnut bound water had no prominent effect to its quality. The results would lay a foundation for further study on dehydration sensitivity and safe water content of chestnut,and promote the preservation and quality of chestnut.