Extending storage life of fresh ginseng by modified atmosphere packaging

Abstract

Fresh ginseng (Panax ginseng) was packaged with LDPE and PVC films. The respiration rates of fresh ginseng were determined in modified atmosphere packaging (MAP) at 0, 10 and 20 • C. The changes in chemical compositions were also measured before and after storage. The results showed that respiration rates of fresh ginseng were suppressed more effectively in MAP, especially in a poly(vinyl chloride) (PVC) package. The storage life of fresh ginseng was significantly extended with better appearance and firmness for 210 days. The decay rate was only 1.3% and 1.0% in both low density polyethylene (LDPE) and PVC film package after 210 days of storage at 0 • C, respectively. The results of saponin analysis indicated that the contents of total saponin were not changed much in all treatments. Reducing sugar was increased by 2.7 to 5.3 times, while pectin decreased by 1.1 to 1.4 times after 210 days of storage at the range of 0-20 • C. Total sugar content also increased during storage, especially in LDPE packages and high temperature. It was considered that MAP was very effective storage method for keeping quality better with minimal quality loss and lower decay rate at lower temperature.

Authentication ofPanax ginsengfrom different regions

“…16 Meanwhile, the development of modied atmospheres packing (MAP) makes the research on cultivated ginseng possible by increasing the duration of storage. 14,[17][18][19][20] In the present study, we used fresh ginseng collected during the month of harvest from various regions and measured the content of total and individual ginsenosides, in addition to the transcription level and activities of seven key enzymes. Further, we proposed a strategy that combines the content of total ginsenoside, single ginsenoside types, gene expression, and activity of key enzyme to nd a marker that has signicant correlation with the total ginsenoside content in fresh ginseng.…”

Application of Modified Atmosphere Packaging on Quality of Selected Vegetables: A Review

“…Storage at 0 °C, especially in PVC packages helped to obtain lower decay rate (1 %) while at the same time its reducing sugar content increased from initial 8.2 to 22, 23.2 and 39.9 mg/g at 0, 10 and 20 °C, respectively. The shelf life of ginseng was prolonged up to 210 days (Hu et al 2005 ). American ginseng roots with an antimicrobial agent (dipping in 0.5 % DF-100 solution for 5 min), were stored at 2 °C under CA (2 % O 2 and 2, 5, and 8 % CO 2 ) or passive MA [PD-941 (high), PD-961 (medium) and PD-900 (low permeability) polyolefi n fi lms used] conditions and studied by Jeon and Lee ( 1999 ).…”

Effects of different substrates on low‐temperature storage of fresh ginseng

“…22 Low-humidity sand can provide a moderate atmosphere to slow down the respiration of ginseng, thereby leading to a relatively high total polysaccharide content relative to the other samples. Furthermore, Hu et al 23 have stated that the slow conversion of starch to sugar may be another reason for the increase in polysaccharide contents. wileyonlinelibrary.com/jsfa postharvest handling and processing.…”