Pradhan Surendra K, Nerg Anne-Marja, Sjöblom Annalena, Holopainen Jarmo K, Heinonen-Tanski Helvi
Department of Environmental Science, University of Kuopio, P.O. Box 1627, FIN-70211 Kuopio, Finland
J Agric Food Chem. 2007 Oct 17;55(21):8657-63. doi: 10.1021/jf0717891. Epub 2007 Sep 26.
Human urine was used as a fertilizer in cabbage cultivation and compared with industrial fertilizer and nonfertilizer treatments. Urine achieved equal fertilizer value to industrial fertilizer when both were used at a dose of 180 kg N/ha. Growth, biomass, and levels of chloride were slightly higher in urine-fertilized cabbage than with industrial-fertilized cabbage but clearly differed from nonfertilized. Insect damage was lower in urine-fertilized than in industrial-fertilized plots but more extensive than in nonfertilized plots. Microbiological quality of urine-fertilized cabbage and sauerkraut made from the cabbage was similar to that in the other fertilized cabbages. Furthermore, the level of glucosinolates and the taste of sauerkrauts were similar in cabbages from all three fertilization treatments. Our results show that human urine could be used as a fertilizer for cabbage and does not pose any significant hygienic threats or leave any distinctive flavor in food products.
在卷心菜种植中，人类尿液被用作肥料，并与工业肥料和不施肥处理进行了比较。当尿液和工业肥料的施用量均为180千克氮/公顷时，尿液的肥料价值与工业肥料相当。施用尿液的卷心菜在生长、生物量和氯含量方面略高于施用工业肥料的卷心菜，但与未施肥的卷心菜有明显差异。施用尿液的地块中昆虫损害比施用工业肥料的地块少，但比未施肥的地块更广泛。施用尿液的卷心菜及其制成的酸菜的微生物质量与其他施肥卷心菜相似。此外，三种施肥处理的卷心菜中硫代葡萄糖苷的含量和酸菜的味道相似。我们的结果表明，人类尿液可以用作卷心菜的肥料，不会造成任何重大卫生威胁，也不会在食品中留下任何独特的味道。
