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KMID : 1024420120160040325
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Food Engineering Progress
2012 Volume.16 No. 4 p.325 ~ p.332
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Comparison of Low Molecular Ginsenoside Contents and CO2 Emission from Low Quality Fresh Ginseng by Low CO2 Emission Processes
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Choi Woon-Yong
Lee Choon-Geun
Song Chi-Ho
Seo Yong-Chang
Kim Ji-Seon
Kim Bo-Hyeon
Lim Hye-won
Lee Hyeon-Yong
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Abstract
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This study is to demostrate how the low molecular ginsenosides can be produced from low grade fresh ginsengs by low CO2 emission processes. Since it was known to apply the low carbon dioxide emission processes to the ginseng processing companies due to requiring high temperature extractions in low grade fresh ginseng. Several types of low CO2 emission processes were empolyed in this experiment such as microwave, ultrasound, ultra-high pressure extraction process that can be more eaisly scaled up to ginseng processing industries. From microwave extraction process, 1.290 mg/g of total low molecule ginsenosides (sum of Rg2, Rg3 and Rh2) were obtained while 1.442 mg/g and 1.258 mg/g were estimated from ultrasonification and ultra high pressure extraction processes, respectively. Total carbon dioxide production (TCO2) from each process was also calculated as 0.1437, 0.0862, 0.1014 TCO2 for microwave, ultrasound and ultra-high pressure extraction process, respectively. It was found that the ultrasonification process was most effective extraction method in processing the low quality ginsengs since this process generated the lowest CO2 emission while the highest low molecular ginsenosides were produced. This result could be caused by that the energy from ultrasonification most efficiently penetrates since the minimum energy from this process was about 146.2 kcal while C-O glycoside binding energy of ginsenosides was ca. 76.5 kcal, and the minimum energy from two other processes were lowere than this.
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KEYWORD
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low quality fresh ginseng, low molecular ginsenoside, low CO2 emission process
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