Lee Hyunah, Shahbaz Hafiz Muhammad, Ha Namho, Kim Jeong Un, Lee Sang Jun, Park Jiyong
Department of Biotechnology, Yonsei University, Seoul, Republic of Korea.
Department of Food Science and Human Nutrition, University of Veterinary and Animal Sciences, Lahore, Pakistan.
J Ginseng Res. 2020 Jan;44(1):154-160. doi: 10.1016/j.jgr.2018.11.004. Epub 2018 Nov 23.
Korean ginseng ( Meyer) powder is in rising demand because powder forms of foods are convenient to handle and are highly preservable. However, ginseng powder (GP) manufactured using the conventional process of air drying and dry milling suffers nutrient destruction and a lack of microbiological safety. The objective of this study was to prepare GP using a novel process comprised of UV-TiO photocatalysis (UVTP) as a prewashing step, wet grinding, high hydrostatic pressure (HHP), and freeze-drying treatments.
The effects of UVTP and HHP treatments on the microbial population, ginsenoside concentration, and physiological characteristics of GP were evaluated.
When UVTP for 10 min and HHP at 600 MPa for 5 min were combined, initial 4.95 log CFU/g-fw counts of total aerobes in fresh ginseng were reduced to lower than the detection limit. The levels of 7 major ginsenosides in UVTP-HHP-treated GP were significantly higher than in untreated control samples. Stronger inhibitory effects against inflammatory mediator production and antioxidant activity were observed in UVTP-HHP-treated GP than in untreated samples. There were also no significant differences in CIELAB color values of UVTP-HHP-treated GP compared with untreated control samples.
Combined processing of UVTP and HHP increased ginsenoside levels and enhanced the microbiological safety and physiological activity of GP.
高丽参（迈耶）粉末的需求不断上升，因为食品粉末形式便于处理且具有高度可保存性。然而，使用传统的风干和干磨工艺生产的人参粉（GP）会遭受营养成分破坏且缺乏微生物安全性。本研究的目的是采用一种新工艺制备GP，该工艺包括将紫外线 - 二氧化钛光催化（UVTP）作为预洗步骤、湿磨、高静水压（HHP）和冷冻干燥处理。
评估了UVTP和HHP处理对GP的微生物数量、人参皂苷浓度和生理特性的影响。
当10分钟的UVTP处理与600兆帕的HHP处理5分钟相结合时，新鲜人参中初始的4.95 log CFU/g-fw的需氧菌总数降至检测限以下。UVTP - HHP处理的GP中7种主要人参皂苷的含量显著高于未处理的对照样品。与未处理的样品相比，UVTP - HHP处理的GP对炎症介质产生的抑制作用更强，抗氧化活性也更高。UVTP - HHP处理的GP的CIELAB颜色值与未处理的对照样品相比也没有显著差异。
UVTP和HHP的联合处理提高了人参皂苷水平，增强了GP的微生物安全性和生理活性。
