Article

Physicochemical analysis of yogurt produced by Leuconostoc mesenteroides H40 and its effects on oxidative stress in neuronal cells

Na-Kyoung Lee1, Sung-Min Lim1, Min-Jeong Cheon1, Hyun-Dong Paik1,*
Author Information & Copyright
1Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea.
*Corresponding Author: Hyun-Dong Paik, Department of Food Science and Biotechnology of Animal Resources, Konkuk University, Seoul 05029, Korea, E-mail: hdpaik@konkuk.ac.kr.

© Copyright 2020 Korean Society for Food Science of Animal Resources. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Sep 22, 2020 ; Revised: Nov 16, 2020 ; Accepted: Nov 26, 2020

Published Online: Dec 07, 2020

Abstract

Leuconostoc mesenteroides H40 (H40) was isolated from kimchi, and its probiotic properties and neuroprotective effect was evaluated in oxidatively stressed SH-SY5Y cells. H40 was stable in artificial gastric conditions and can be attached in HT-29 cells. In addition, H40 did not produce β-glucuronidase and showed resistant to several antibiotics. The conditioned medium (CM) was made using HT-29 cells refined with heat-killed probiotics (probiotic-CM) and heated yogurts (Y-CM) to investigate the neuroprotective effect. Treatment with H40-CM not only increased cell viability but also significantly improved brain derived neurotropic factor (BDNF) expression and reduced the Bax/Bcl-2 ratio in oxidatively stress-induced SH-SY5Y cells. Besides, probiotic Y-CM significantly increased BDNF mRNA expression and decreased Bax/Bcl-2 ratio. The physicochemical properties of probiotic yogurt with H40 was not significantly different from the control yogurt. The viable cell counts of lactic acid bacteria in control and probiotic yogurt with H40 was 8.66 Log CFU/mL and 8.96 Log CFU/mL, respectively. Therefore, these results indicate that H40 can be used as prophylactic functional dairy food having neuroprotective effects.

Keywords: probiotics; Leuconostoc mesenteroides; neuroprotective effect; probiotic yogurt; oxidative stress


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The name of the journal has been changed from Korean Journal for Food Science of Animal Resources to Food Science of Animal Resources from January 2019.

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