Effects of tea leaf waste of green tea, oolong tea, and black tea addition on sudangrass silage quality and in vitro gas production
Effects of tea leaf waste of green tea, oolong tea, and black tea addition on sudangrass silage quality and in vitro gas production
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DOI：
10.1002/jsfa.1718
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发表时间：
2004-05-01
影响因子：
4.1
通讯作者：
Yokota, H
中科院分区：
文献类型：
--
作者：
Kondo, M;Kita, K;Yokota, H
本研究评价了添加绿茶、乌龙茶和红茶茶叶废料的苏丹草（苏丹高粱）青贮饲料的发酵特性和体外产气量。所有类型的茶叶14叶渣均含有大量的氮（N）和单宁酸，以及少量的低水溶性碳水化合物。苏丹草在不添加（对照）和添加绿茶废料（GTW）、乌龙茶废料（OTW）或红茶废料（BTW）的情况下在实验室筒仓中保存，新鲜物质的比例为50、100和200 g kg(-1)。在所有用量下的 GTW 和 200g kg(-1) 用量下的 OTW 中，pH 值和丁酸水平均显着较低，而对照和 BTW 处理的青贮饲料中的 pH 和丁酸水平较高。 GTW 和 OTW 处理的青贮饲料中的乳酸水平明显高于对照和 BTW 处理的青贮饲料。添加所有类型的茶渣都增加了青贮饲料的总氮和单宁，而 OTW 和 BTW 处理的青贮饲料中酸性洗涤剂不溶性氮增加。与对照相比，GTW处理在96小时内增加了气体产量，而OTW和BTW以200g kg(-1)的比例添加导致气体产量降低。得出的结论是，这些类型的茶叶与茶叶废弃物混合的青贮饲料的发酵特性和饲料价值是不同的。在这三种茶渣中，GTW是作为青贮饲料添加剂最有价值的材料。 (C) 2004 年化学工业学会。
This study evaluated the fermentation characteristics and in vitro gas production of sudangrass (Sorghum sudanese) silage with tea leaf waste of green tea, oolong tea and black tea added. All types of tea 14 leaf waste contain large amounts of nitrogen (N) and tannins, and a small amount of low-water-soluble carbohydrates. Sudangrass was preserved without (control) and with green tea waste (GTW), oolong tea waste (OTW) or black tea waste (BTW) at rates of 50, 100 and 200 g kg(-1) fresh matter in laboratory silos. The pH and butyric acid levels were significantly lower in GTW at all rates and in OTW at the 200g kg(-1) rate, whereas those levels were high in the control and BTW-treated silage. Lactic acid level was appreciably higher in GTW- and OTW-treated silage than the control and BTW-treated silage. The addition of all types of tea waste increased the total N and tannins of the silage, whereas the acid detergent insoluble N was increased in the OTW- and BTW-treated silage. GTW treatment increased gas production within a 96-h period compared with the control, whereas OTW and BTW additions at 200g kg(-1) rates caused lower gas production. It is concluded that the fermentation characteristics and feed value of the silage incorporating with tea leaf wastes are different for these types of tea leaf. Among the three kinds of tea waste, GTW is the most valuable material as a silage additive. (C) 2004 Society of Chemical Industry.