An effective HPLC-based approach for the evaluation of the content of total phenolic compounds transferred from olives to virgin olive oil during the olive milling process
An effective HPLC-based approach for the evaluation of the content of total phenolic compounds transferred from olives to virgin olive oil during the olive milling process
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DOI：
10.1002/jsfa.8841
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发表时间：
2018-08-15
影响因子：
4.1
通讯作者：
Mulinacci, Nadia
中科院分区：
文献类型：
--
作者：
Cecchi, Lorenzo;Migliorini, Marzia;Mulinacci, Nadia
一些研究表明，人们对更多地了解榨油过程中的酚转移有浓厚的兴趣，其主要目标是增加橄榄油中的酚浓度。我们的目的是提出并应用一种新的方法来评估在碾磨过程中从橄榄到油的酚转移，基于整个冻干果实和相应的油中酚含量的定量，并考虑油的提取率。结果我们研究了托斯卡纳连续萃取系统中橄榄研磨过程中转移到油中的酚类物质。2012年，采用两相萃取系统从栽培植物Frantoio中提取油脂；2016年，通过三相萃取系统从Leccio del Corno和Arbequina两种栽培植物中提取精油。结果表明，两相萃取法提取的酚类物质含量为0.40%，三相萃取法提取的酚类物质含量为0.19%（阿贝奎纳为0.08%，Corno为0.19%）。结论建立了一种简单、有效的评价方法。所提取的酚类物质比文献数据低25倍。所提出的方法适用于所有类型的铣削工艺。(c) 2017年化学工业学会
BACKGROUNDSeveral studies demonstrate a strong interest in learning more about phenolic transfer during oil extraction, with the main goal of increasing the phenolic concentration in olive oils. We aimed to propose and apply a new methodological approach for evaluating phenolic transfer from olives into oil during milling, based on the quantification of phenolic content in whole lyophilized fruits and the corresponding oils and considering the oil extraction yields.RESULTSWe investigated the phenols transferred into the oil during olive milling in continuous extraction systems in Tuscany. In 2012, oils were extracted from cultivar Frantoio by a two-phase extraction system; in 2016, oils were extracted from cultivars Leccio del Corno and Arbequina by a three-phase extraction system. Results highlighted very low percentages of extracted phenols: up to 0.40% by the two-phase system and up to 0.19% by the three-phase system (0.08% for cultivar Arbequina and 0.19% for cultivar Leccio del Corno).CONCLUSIONThe usefulness of a simple and effective methodological approach for evaluating the extracted phenols was highlighted. Values of extracted phenols were up to 25 times lower than previous literature data. The proposed approach is applicable in all types of milling processes. (c) 2017 Society of Chemical Industry