Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, 518060, Guangdong, China.
Department of Optoelectronic Science and Technology, Shenzhen University, Shenzhen, 518060, People's Republic of China.
Arch Microbiol. 2021 Aug;203(6):3061-3070. doi: 10.1007/s00203-021-02291-w. Epub 2021 Mar 31.
During the past few years, there are growing interests in the potential use of exopolysaccharide (EPS) in the food industry as an efficient biopolymer because of its exceptional biological features. Therefore, the aim of the present study is EPS production by Lactobacillus Plantarum S123 (S123 EPS), its partial structural and biopotential characterization. The results from this study suggested that the major portion of S123 EPS has an amorphous sponge-like structure with partial crystalline nature. The FTIR and NMR results suggested that the S123 EPS consists of carbonyl and hydroxyl groups, respectively. Furthermore, the results of technological as well as biotechnological characterization suggested that the S123 EPS was exhibited excellent antibacterial activity against Gram-positive (7.2 mm) and Gram-negative bacteria (11.5 mm), DPPH radical scavenging activity (> 65%), water holding capacity (326.6 ± 0.5%), oil holding capacity (995.3 ± 0.2%), flocculation (89.5 ± 0.6%), and emulsifying (80.1 ± 1.1%) activities. Overall, the present results suggested that due to the highly porous structure and efficient biotechnological potential, S123 EPS from Lactobacillus plantarum S123 (L. plantarum S123) can be used in the functional food product.
在过去的几年中，由于其特殊的生物学特性，人们对将胞外多糖 (EPS) 作为一种有效的生物聚合物应用于食品工业的潜力越来越感兴趣。因此，本研究的目的是生产植物乳杆菌 S123 (S123 EPS) 的 EPS，并对其进行部分结构和生物潜力的表征。研究结果表明，S123 EPS 的主要部分具有无定形海绵状结构，具有部分结晶性质。FTIR 和 NMR 结果表明，S123 EPS 由羰基和羟基组成。此外，技术和生物技术特性的结果表明，S123 EPS 对革兰氏阳性菌（7.2 毫米）和革兰氏阴性菌（11.5 毫米）表现出优异的抗菌活性，DPPH 自由基清除活性（>65%），持水能力（326.6±0.5%），持油能力（995.3±0.2%），絮凝（89.5±0.6%）和乳化（80.1±1.1%）活性。总的来说，本研究结果表明，由于具有高度多孔的结构和高效的生物技术潜力，来自植物乳杆菌 S123 的 S123 EPS（L. plantarum S123）可用于功能性食品产品。
