Food diversity, and in particular genetic diversity, is being lost at an alarming rate. Protection of natural areas is crucial to safeguard the world’s threatened species. The Medes Islands (MI), located in the northwest Mediterranean Sea, are a protected natural reserve. Wild olive trees also known as oleasters make up part of the vegetation of the Meda Gran island. Among them, in 2012, a wild albino ivory-white olive tree with fruit was identified. Fruits were collected from this tree and their seeds were first sown in a greenhouse and then planted in an orchard for purposes of ex situ preservation. Seven out of the 78 seedling trees obtained (12%) produced ivory-white fruits. In autumn 2018, fruits from these trees were sampled. Although the fruits had low oil content, virgin olive oil with unique sensory, physicochemical, and stability characteristics was produced. With respect to the polyphenols content, oleacein was the main compound identified (373.29 ± 72.02 mg/kg) and the oleocanthal was the second most abundant phenolic compound (204.84 ± 52.58 mg/kg). Regarding pigments, samples were characterized by an intense yellow color, with 12.5 ± 4.6 mg/kg of chlorophyll and 9.2 ± 3.3 mg/kg of carotenoids. Finally, oleic acid was the main fatty acid identified. This study explored the resources of the natural habitat of the MI as a means of enrichment of olive oil diversity and authenticity of this traditional Mediterranean food

中文翻译：

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保护MEDES群岛自然保护区的本地野生象牙白橄榄，以保持初榨橄榄油的多样性

粮食多样性，特别是遗传多样性正在以惊人的速度流失。保护自然地区对于保护世界上受威胁的物种至关重要。位于地中海西北部的Medes群岛（MI）是受保护的自然保护区。野生橄榄树也被称为橄榄树，是Meda Gran岛植被的一部分。其中，2012年，鉴定出了带有果实的野生白化象牙白橄榄树。从这棵树上收集果实，其种子首先播种在温室中，然后种植在果园中以进行非原生境保存。在获得的78棵幼苗树中，有7棵（占12％）产生了象牙白的果实。在2018年秋季，对这些树木的果实进行了采样。尽管果实的油含量低，但初榨橄榄油具有独特的感官，理化，并且产生了稳定性特征。就多酚含量而言，油酸甘油酯是鉴定出的主要化合物（373.29±72.02 mg / kg），而油橄榄酚是第二高含量的酚类化合物（204.84±52.58 mg / kg）。关于颜料，样品的特征是深黄色，叶绿素为12.5±4.6 mg / kg，类胡萝卜素为9.2±3.3 mg / kg。最后，油酸是确定的主要脂肪酸。这项研究探索了MI天然栖息地的资源，以此来丰富橄榄油的多样性和这种传统地中海美食的真实性 样品的特征是深黄色，叶绿素为12.5±4.6 mg / kg，类胡萝卜素为9.2±3.3 mg / kg。最后，油酸是确定的主要脂肪酸。这项研究探索了MI天然栖息地的资源，以此来丰富橄榄油的多样性和这种传统地中海美食的真实性 样品的特征是深黄色，叶绿素为12.5±4.6 mg / kg，类胡萝卜素为9.2±3.3 mg / kg。最后，油酸是确定的主要脂肪酸。这项研究探索了MI天然栖息地的资源，以此来丰富橄榄油的多样性和这种传统地中海美食的真实性