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Marconi O, Tomasi I, Sileoni V, Bonciarelli U, Guiducci M, Maranghi S, Perretti G. Effects of Growth Conditions and Cultivar on the Content and Physiochemical Properties of Arabinoxylan in Barley. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:1064-1070. [PMID: 31917563 DOI: 10.1021/acs.jafc.9b05488] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The present study aims to evaluate the effect of the growth conditions and the cultivar on the total and water-extractable (W-E) arabinoxylan (AX) in barley. For this purpose, nine barley varieties from two different years were analyzed. The total AX content ranged from 5.97 to 8.98 wt % d.m., while the W-E AX ranged from 0.06 to 0.35 wt % d.m. The W-E AX molecular properties were characterized by high-pressure size exclusion chromatography (HPSEC)-triple detector array (TDA). The molecular weight was between 2.3 × 105 and 12.6 × 105 Da, the polydispersity was between moderate and broad (1.1 < Mw/Mn < 4.3), and the conformation was a stiff semiflexible coil (0.5 < α < 1.3). The results indicate that the year influences the content of total AX and W-E AX and some molecular characteristics of W-E AX, such as its polydispersity and its conformation. Finally, the results demonstrated that the W-E AX can be used as an index of the malting attitude of barley because it positively correlates with germinative energy and kernel dimension.
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Affiliation(s)
- Ombretta Marconi
- University of Perugia , Department of Agricultural, Food and Environmental Science , Borgo XX Giugno , 06121 Perugia , Italy
- University of Perugia , Italian Brewing Research Centre , via San Costanzo s.n.c. , 06126 Perugia , Italy
| | - Ivan Tomasi
- University of Perugia , Department of Agricultural, Food and Environmental Science , Borgo XX Giugno , 06121 Perugia , Italy
| | - Valeria Sileoni
- University of Perugia , Italian Brewing Research Centre , via San Costanzo s.n.c. , 06126 Perugia , Italy
| | - Umberto Bonciarelli
- University of Perugia , Department of Agricultural, Food and Environmental Science , Borgo XX Giugno , 06121 Perugia , Italy
| | - Marcello Guiducci
- University of Perugia , Department of Agricultural, Food and Environmental Science , Borgo XX Giugno , 06121 Perugia , Italy
| | - Stefano Maranghi
- University of Perugia , Italian Brewing Research Centre , via San Costanzo s.n.c. , 06126 Perugia , Italy
| | - Giuseppe Perretti
- University of Perugia , Department of Agricultural, Food and Environmental Science , Borgo XX Giugno , 06121 Perugia , Italy
- University of Perugia , Italian Brewing Research Centre , via San Costanzo s.n.c. , 06126 Perugia , Italy
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