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一、引言枣树是我国特产,陕、晋黄河峡谷是我国枣树的发源地。我省枣树品种资源名列全国第一,栽培面积和产量名列全国第五;现有枣树33.2万亩,在我省八大水果中,栽培面积仅次于苹果,位居第二。由此可见,枣树是我省重要果树之一。红枣营养丰富,以维生素 C 而言,100克鲜枣果肉中含400～600毫克,比维 C 含量高的猕猴桃还高出1倍左右;干枣含糖量达70～80%以上;另有人体不可缺少的蛋白质,脂肪、维生素 A 和 B 及钙、磷、铁等多种矿质元素。近年来,又发现枣肉中含有大量维生素 P(卢丁,每百克枣肉内含3385毫
I. Introduction Jujube is our specialty, Shaanxi, Shanxi Yellow River Canyon is the birthplace of jujube in China. The province jujube variety resources ranked first in the country, cultivation area and output ranked fifth in the country; the existing jujube 332000 mus, eight of the province’s fruit, cultivation area second only to apples, ranked second. Thus, jujube is one of the important fruit trees in our province. Jujube nutrient-rich, with vitamin C, 100 grams of fresh dates pulp containing 400 to 600 mg, higher than the vitamin C content of kiwifruit is also about 1 times higher; dried dates sugar content of more than 70 to 80%; otherwise The body indispensable protein, fat, vitamins A and B and calcium, phosphorus, iron and other mineral elements. In recent years, they also found jujube meat contains a lot of vitamin P (Luding, per hundred grams of jujube meat containing 3385 milli