Economic and environmental sustainability analysis of guar (Cyamopsis tetragonoloba L.) farming process in a Mediterranean area: two case studies
Economic and environmental sustainability analysis of guar (Cyamopsis tetragonoloba L.) farming process in a Mediterranean area: two case studies
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地中海地区瓜尔豆（Cyamopsis tetragonoloba L.）种植过程的经济和环境可持续性分析：两个案例研究
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
G. Gulisano
中科院分区：
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作者：
F. Gresta;A. D. Luca;A. Strano;G. Falcone;C. Santonoceto;U. Anastasi;G. Gulisano
瓜尔豆（Cyamopsis tetragonoloba L.）是一种春夏豆科植物，具有很高的耐旱性，主要生长在印度、巴基斯坦、美国和南非，其种子含有半乳甘露聚糖。它们可以用作润肤剂、软化剂或增稠剂、絮凝剂，也可以用于水力压裂，还可以作为稳定剂广泛用于其他工业活动：化妆品、造纸、纺织品、油漆和清漆、洗涤剂、建筑和食品（果酱、果冻、酸奶、蛋黄酱、番茄酱、减肥食品、乳糜食品等）的生产。鉴于瓜尔粉的工业需求不断增长，2012年5月在意大利南部进行了一项试验。来自南非的种子在两个土壤特征不同的农场大面积播种。该作物的产量在1.8至2.2吨/公顷之间。然后利用农艺结果进行综合可持续性分析，采用生产成本分析和生命周期评估，分别评估瓜尔豆在地中海环境下生产过程的成本效益和环境影响。与其他竞争作物相比，瓜尔豆的二氧化碳当量排放量低于3000公斤，可视为低排放作物。考虑到上述产量，当瓜尔豆种子购买价格不低于0.96€kg -1时，瓜尔豆种植在经济上是可持续的。
Guar ( Cyamopsis tetragonoloba L.) is a spring-summer legume with a high drought tolerance, grown mainly in India, Pakistan, United States and South Africa, whose seeds contain galactomannans. These can be used as an emollient, softening or thickening agent, a flocculant, as well as in hydraulic fracturing, and as a stabiliser in a wide range of other industrial activities: the production of cosmetics, paper, textiles, paints and varnishes, detergents, in construction, and in food products (jams, jellies, yogurt, mayonnaise, ketchup, diet foods, foods for coeliacs, etc .). In the light of a growing industrial demand for guar flour, in May 2012 a trial was carried out in southern Italy. Seeds from South Africa were sown in large plots on two farms with different soil characteristics. The crop showed yields varying between 1.8 and 2.2 t ha –1 . Agronomic results were then used to conduct an integrated sustainability analysis using the production cost analysis and the life cycle assessment, in order to assess, respectively, the cost-effectiveness and the environmental impact of the production process of guar in a Mediterranean environment. Compared to other competitive crops, guar, with less than 3000 kg of CO 2 eq. emissions, can be considered as a low-emission crop. Given the above-mentioned yield, guar growing is economically sustainable when the purchase price of seeds is not less than 0.96 € kg –1 .