Biorefinery of the green seaweed Ulva lactuca to produce animal feed, chemicals and biofuels.
Biorefinery of the green seaweed Ulva lactuca to produce animal feed, chemicals and biofuels.
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绿色海藻Ulva lactuca的生物填充物生产动物饲料，化学物质和生物燃料。
DOI：
10.1007/s10811-016-0842-3
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发表时间：
2016
影响因子：
3.3
通讯作者：
Lopez-Contreras, Ana M.
中科院分区：
文献类型：
--
作者：
Bikker, Paul;van Krimpen, Marinus M.;van Wikselaar, Piet;Houweling-Tan, Bwee;Scaccia, Nazareno;van Hal, Jaap W.;Huijgen, Wouter J. J.;Cone, John W.;Lopez-Contreras, Ana M.
关键词：
不断增长的世界人口要求增加动物蛋白的生产。海藻可能是动物饲料的有价值的蛋白质来源。然而，需要一种旨在级联蛋白质和非蛋白质海藻成分的生物精炼方法，以实现经济上可行的价值链。在这项研究中，这样的生物精炼方法是为含有225克蛋白质（N × 4.6）kg-1干物质（DM）的绿色海藻石莼。生物质中的糖通过热水处理溶解，然后进行酶水解和离心，得到含有葡萄糖、鼠李糖和木糖的富含糖的水解产物（38.8 g L-1糖）和富含蛋白质的（343 g kg-1 DM）提取级分。该提取部分的特征在于用于动物饲料中，与U.莴苣生物量基于必需氨基酸的含量和体外N（85%）和有机物（90%）的消化率，与完整的U.莴苣产气试验表明，U.S.莴苣和提取部分，大约类似于苜蓿。可能需要减少高含量的矿物质和微量元素，以允许高含量的U。动物饲料中的莴苣产品。利用水解液进行梭菌发酵生产丙酮、丁醇、乙醇和1，2-丙二醇，并对发酵模式进行了研究。本文的在线版本（doi：10.1007/s10811-016-0842-3）包含补充材料，可供授权用户使用。
The growing world population demands an increase in animal protein production. Seaweed may be a valuable source of protein for animal feed. However, a biorefinery approach aimed at cascading valorisation of both protein and non-protein seaweed constituents is required to realise an economically feasible value chain. In this study, such a biorefinery approach is presented for the green seaweed Ulva lactuca containing 225 g protein (N × 4.6) kg−1 dry matter (DM). The sugars in the biomass were solubilised by hot water treatment followed by enzymatic hydrolysis and centrifugation resulting in a sugar-rich hydrolysate (38.8 g L−1 sugars) containing glucose, rhamnose and xylose, and a protein-enriched (343 g kg−1 in DM) extracted fraction. This extracted fraction was characterised for use in animal feed, as compared to U. lactuca biomass. Based on the content of essential amino acids and the in vitro N (85 %) and organic matter (90 %) digestibility, the extracted fraction seems a promising protein source in diets for monogastric animals with improved characteristics as compared to the intact U. lactuca. The gas production test indicated a moderate rumen fermentation of U. lactuca and the extracted fraction, about similar to that of alfalfa. Reduction of the high content of minerals and trace elements may be required to allow a high inclusion level of U. lactuca products in animal diets. The hydrolysate was used successfully for the production of acetone, butanol, ethanol and 1,2-propanediol by clostridial fermentation, and the rhamnose fermentation pattern was studied. The online version of this article (doi:10.1007/s10811-016-0842-3) contains supplementary material, which is available to authorized users.
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影响因子：
2
作者：
Choct, M;Hughes, RJ;Annison, G
通讯作者：
Annison, G
影响因子：
3.7
作者：
Cole, Andrew J.;de Nys, Rocky;Paul, Nicholas A.
通讯作者：
Paul, Nicholas A.
影响因子：
15.3
作者：
Fleurence, J
通讯作者：
Fleurence, J
影响因子：
3.3
作者：
Fleurence, J;LeCoeur, C;Landrein, A
通讯作者：
Landrein, A
影响因子：
4.5
作者：
Abreu, Maria H.;Pereira, Rui;Sousa-Pinto, Isabel
通讯作者：
Sousa-Pinto, Isabel