期刊
FOOD CHEMISTRY
卷 136, 期 2, 页码 668-674出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2012.08.086
关键词
Truffles; Aroma; Electronic nose; GC-MS; Shelf-life; Tuber magnatum Pico
The characteristic aromatic composition of white truffles (Tuber magnatum Pico) determines its culinary and commercial value. However modifications of truffle organoleptic proprieties occur during preservation. A study of headspace of white truffles by using Electronic nose (E-nose), gas chromatography-mass spectrometry (GC-MS) and sensory analyses was performed. Truffles were stored at different conditions for 7 days: +4 and +8 degrees C wrapped in blotting paper or covered by rice or none of the above. Headspace E-nose measurements and sensory analyses were performed each day. Statistical multivariate analysis of the data showed the capability of E-nose to predict sensorial analysis scores and to monitor aroma profile changes during storage. Truffle's volatile molecules were also extracted by headspace solid phase microextraction technique and separated and identified by GC-MS. Partial Components Analysis of data was performed. E-nose and GC-MS results were in agreement and showed that truffle storage in paper at +8 degrees C seemed to be the best storage condition. (C) 2012 Elsevier Ltd. All rights reserved.
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