Utilization of Echium amoenum Extract as a Growth Medium for the Production of Organic Acids by Selected Lactic Acid Bacteria
Utilization of Echium amoenum Extract as a Growth Medium for the Production of Organic Acids by Selected Lactic Acid Bacteria
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DOI：
10.1007/s11947-011-0564-0
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发表时间：
2012-08-01
影响因子：
5.6
通讯作者：
Razavi, Seyed Hadi
中科院分区：
文献类型：
--
作者：
Jahandideh, Forough;Mousavi, Seyed Mohammad;Razavi, Seyed Hadi
Gol-gavzaban（Echium amoenum菲施. & Mey.）是一种本土草本植物，与紫草科有关，历史上在伊朗种植。在这项研究中，蓝蓟提取物作为原料生产发酵汁的乳酸菌（副干酪乳杆菌，嗜酸乳杆菌，植物乳杆菌，德氏乳杆菌）的适用性进行了检查。将蓝蓟提取物接种这些细菌，并在30 ℃下孵育24小时。在发酵过程中的微生物种群，pH值，酸度，糖，和有机酸代谢的变化进行了测量。结果表明，所有筛选的细菌都能在不添加任何添加剂的蓝蓟提取物中生长良好。它们都同时代谢糖，包括葡萄糖、果糖和蔗糖。L.副干酪对糖消耗的亲和力分别为初始葡萄糖、果糖和蔗糖浓度的45.2%、38%和21.6%。发酵开始后立即产生乳酸。L. [医]植物delbrueckii和L.嗜酸乳杆菌的乳酸产量分别为6.8、6.6和6.4g/L，显著高于L.副干酪（5 g/l）。另一方面，在乙酸的情况下，L.与其他菌株相比，副干酪产生的量明显更大（4.48克/升）。证明了E. amoenum是所有这些菌株生产某些有机酸的理想培养基。
Gol-gavzaban (Echium amoenum Fisch. & Mey.) is an indigenous herbal plant, related to the Boraginaceae family, cultivated historically in Iran. In this study, the suitability of Echium extract as a raw material for production of fermented juice by four strains of lactic acid bacteria (Lactobacillus paracasei, Lactobacillus acidophilus, Lactobacillus plantarum, and Lactobacillus delbrueckii) was examined. Echium extract was inoculated with these bacteria and incubated at 30 degrees C for 24 h. Changes in microbial population, pH, acidity, sugars, and organic acids metabolism were measured during the fermentation process. Results showed that all of the selected bacteria were capable to grow well in Echium extract without any supplementation. They all metabolized sugars including glucose, fructose and sucrose simultaneously. L. paracasei showed more affinity to sugar consumption at almost 45.2%, 38%, and 21.6% of initial glucose, fructose, and sucrose concentration, respectively. Lactic acid was produced immediately after the fermentation started. L. plantarum, L. delbrueckii, and L. acidophilus produced 6.8, 6.6, and 6.4 g/l lactic acid, respectively, which were significantly higher than that produced by L. paracasei (5 g/l). On the other hand in the case of acetic acid, L. paracasei produced significantly greater quantities in comparison with other strains (4.48 g/l). It was proved that E. amoenum was a desirable media for the production of some organic acids by all these bacterial strains.