High-quality Italian rice cultivars: Chemical indices of ageing and aroma quality
High-quality Italian rice cultivars: Chemical indices of ageing and aroma quality
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DOI：
10.1016/j.foodchem.2014.09.082
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发表时间：
2015-04-01
期刊：
影响因子：
8.8
通讯作者：
Sgorbini, Barbara
中科院分区：
文献类型：
--
作者：
Griglione, Alessandra;Liberto, Erica;Sgorbini, Barbara
采用HS-SPME-GC-MS对意大利6个优质水稻品种的挥发性成分进行了指纹图谱分析，并鉴定了老化和香气品质的化学标记和指标。特别是对2010年和2011年收获的四种非芳香水稻（Carnaroli、Carnise、Cerere和Antares）和两种芳香水稻（Apollo和Venere）进行了为期12个月的监测。考虑了25种香气成分，尽管年际变化很大，但其中一些成分随时间的变化趋势相似，包括2-(E)-辛醛作为所有品种老化的标志，以及庚醛、辛醛和2-乙基己醇作为品种特有的指标。Venere的2-乙酰基-1-吡咯啉/1-辛烯-3-醇的面积比，Apollo的3-甲基-1-丁醇/2-甲基-1-丁醇的面积比也被发现是衰老指标。此外，还通过定量分析及其与籽粒形状和化学成分的关系获得了关键香气化合物释放的更多信息。庚醛/1-辛烯-3-醇和庚醛/辛醛比值也被定义为表征所研究的6个意大利水稻品种香气品质的指标。(C) 2014 Elsevier Ltd.版权所有。
The volatile fractions of six Italian high-quality rice cultivars were investigated by HS-SPME-GC-MS to define fingerprinting and identify chemical markers and/or indices of ageing and aroma quality. In particular, four non-aromatic (Carnaroli, Carnise, Cerere and Antares) and two aromatic (Apollo and Venere) rices, harvested in 2010 and 2011, were monitored over 12 months.Twenty-five aroma components were considered and, despite considerable inter-annual variability, some of them showed similar trends over time, including 2-(E)-octenal as a marker of ageing for all cultivars, and heptanal, octanal and 2-ethyl hexanol as cultivar-specific indicators. The area ratios 2-acetyl- 1-pyrroline/1-octen-3-ol, for Venere, and 3-methyl-1-butanol/2-methyl-1-butanol, for Apollo, were also found to act as ageing indices.Additional information on release of key-aroma compounds was also obtained from quantitation and its dependence on grain shape and chemical composition. Heptanal/1-octen-3-ol and heptanal/octanal ratios were also defined as characterising the aroma quality indices of the six Italian rice cultivars investigated. (C) 2014 Elsevier Ltd. All rights reserved.