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EnglishAn instrumental texture analysis method has been optimized for the differentiation of grape ripening stages based on the simultaneous determination of mechanical and acoustic parameters of the seeds. Two factorial central composite design was used to optimize the most influencing operative conditions (speed and deformation) on mechanical and acoustic measurements. This experimental design in combination with response surface methodology showed that the most responsive parameters to changes in seeds during ripening were Young’s modulus of elasticity, many acoustic parameters measured with instrumental gain set to 0 (acoustic energy, linear distance, and number of peaks) and others measured at 24 dB gain (linear distance, number of peaks, and average pressure level). However, the optimal operative conditions depended on the texture parameter used. A correlation study between texture parameters and phenolic compounds of the seeds revealed that acoustic parameters like the average pressure level could be proposed as phenolic maturity indices.
Torchio, F.; Giacosa, S.; Segade, S.R.; Mattivi, F.; Gerbi, V.; Rolle, L. (2012). Optimization of a method based on the simultaneous measurement of acoustic and mechanical properties of winegrape seeds for the determination of the ripening stage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 60 (36): 9006-9016. doi: 10.1021/jf302548t handle: http://hdl.handle.net/10449/21530
| Citation: | Torchio, F.; Giacosa, S.; Segade, S.R.; Mattivi, F.; Gerbi, V.; Rolle, L. (2012). Optimization of a method based on the simultaneous measurement of acoustic and mechanical properties of winegrape seeds for the determination of the ripening stage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 60 (36): 9006-9016. doi: 10.1021/jf302548t handle: http://hdl.handle.net/10449/21530 |
| Internal authors: | |
| Organization unit: | Food Quality and Nutrition Department # CRI_2011-JAN2016 |
| Authors: | Torchio, F.; Giacosa, S.; Segade, S.R.; Mattivi, F.; Gerbi, V.; Rolle, L. |
| Title: | Optimization of a method based on the simultaneous measurement of acoustic and mechanical properties of winegrape seeds for the determination of the ripening stage |
| Journal: | JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY |
| Issue Date: | 2012 |
| Keywords ENG: | Instrumental texture analysis Acoustic emission Mechanical properties Grape seeds Phenolic maturity index Response surface methodology |
| Language: | English |
| IF: | With Impact Factor ISI |
| Publication status: | Published |
| Nature of content: | Articolo in rivista/Article |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1021/jf302548t |
| Appears in Collections: | 01 - Journal article |
Files in This Item:
| File | Description | Type | License | |
|---|---|---|---|---|
| 2012 JAFC Torchio et al.pdf | N/A | Tutti i diritti riservati (All rights reserved) | Embargo Request a copy |
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