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http://dx.doi.org/10.9799/ksfan.2018.31.4.559

Changes in Reducing Sugar and Catalpol Contents of Rehmannia Root Slurry with Aging Treatments  

Jang, Gwi Yeong (Dept. of Herbal Crop Research, NIHHS, RDA)
Kim, Dong Hwi (Dept. of Herbal Crop Research, NIHHS, RDA)
Park, Chan Hum (Dept. of Herbal Crop Research, NIHHS, RDA)
Shin, Yu Su (Dept. of Herbal Crop Research, NIHHS, RDA)
Kang, Tae Su (Dept. of Food Science and Biotechnology, Chungbuk Provincial University of Science and Technology)
Jeong, Heon Sang (Dept. of Food Science and Biotechnology, Chungbuk National University)
Choi, Jehun (Dept. of Herbal Crop Research, NIHHS, RDA)
Publication Information
The Korean Journal of Food And Nutrition / v.31, no.4, 2018 , pp. 559-564 More about this Journal
Abstract
Rehmannia glutinosa root (R. root) has been used as an traditional medicine, and is important resource for natural medicines and functional foods. However, R. root contains catalpol which is bitter, and undigested sugars, including stachyose and raffinose, which can cause diarrhea. Therefore, this study was performed to identify the changes in reducing sugar from undigested sugars and in catalpol contents in R. root slurry induced by aging treatments. R. root slurry was treated at $10{\sim}70^{\circ}C$ for up to 72 hr; and extracted with a 50% ethanol solution. The catalpol content was analyzed using HPLC-UVD. Reducing sugar content generated from undigested sugars was measured by the Nelson-Somogyi methods, and the reaction rates were calculated from their variation according to aging time and temperature. During the aging treatment, reducing sugar increased and catalpol decreased. Their formation and degradation rates were highest at $50^{\circ}C$ and $30{\sim}40^{\circ}C$, and their rates were $2.05mg/g{\cdot}hr$ and 23.09 to 23.33%/hr, respectively. These results indicated that aging treatment can positively affect the sweetness and digestibility of R. root slurry. Therefore, an aging treatment could be considered for improving the taste and digestibility of R. root.
Keywords
Rehmannia glutinosa root slurry; catalpol; sugars; sweetness; digestibility;
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1 Birch GG, Shallenberger RS. 1976. Structural relationships of sugars to taste. Cri Rev Food Sci Nutr 8:57-95   DOI
2 Chang JM, Liu XY, Chang JH. 1998. Experimental study of Rehmannia glutinosa affecting blood pressure. Lishizhen Med Mater Med Res 9:416-417
3 Chao JC, Chiang SW, Wang CC, Tsai YH, Wu MS. 2006. Hot water-extracted Lycium barbarum and Rehmannia glutinosa inhibit proliferation and induce apoptosis of hepatocellular carcinoma cells. WJG 12:4478-4484   DOI
4 Ghisalberti EL. 1998. Biological and pharmacological activity of naturally occurring iridoids and secoiridoids. Phytomedicine 5:147-163   DOI
5 Hata Y, Yamamoto M, Nakajima K. 1991. Effects of soybean oligosaccharides on human digestive organs: Estimation of fifty percent effective dose and maximum non-effective dose based on diarrhea. J Clin Biochem Nutr 10:135-144   DOI
6 Hernandez LF, Espinosa JC, Fernandez-Gonzalez M, Briones A. 2003. ${\beta}$-Glucosidase activity in a Saccharomyces cerevisiae wine strain. Int J Food Microbiol 80:171-176   DOI
7 Hwang SJ. 2005. Growth characteristics and catalpol production in Chinese foxglove (Rehmannia glutinosa Liboschitz) hairy roots transformed with Agrobacterium rhizogenes ATCC 15834. J Plant Biol 48:380-386   DOI
8 Hwang IG, Woo KS, Kim TM, Kim DJ, Yang MH, Jeong HS. 2006. Change of physicochemical characteristics of Korean pear (Pyrus pyrifolia Nakai) juice with heat treatment conditions. Korean J Food Sci Technol 38:342-347
9 Jeong JH, Yu KW, Kim SJ, Choi YE, Paek KY. 2004. Plant regeneration from adventitious roots of Rehmannia glutinosa Liboschitz and bioreactor culture. Korean J Plant Biotechnol 31:55-60   DOI
10 Jung SS, Lee SR. 1986. Enzymaic characteristics of ${\alpha}$-glactosidase for the removal of flatulence factor in soybean. Korean J Food Sci Technol 18:450-457
11 Zhao LG, Gao SJ, Meng QZ, Zhang FY. 1990. A comparative study on effects of single tonic herbs on defense mechanism. Tianjin J Tradit Chinese Med 5:30-32
12 Zhao Y, Wen XS, Cui J, Wu WH. 2006. Extraction and saltingout purification of ${\alpha}$-galactosidase and ${\beta}$-glucosidase from fresh roots of Rehmannia glutinosa. J Chinese Med Mater 29:137-139
13 Mander L, Liu HW. 2010. Comprehensive Natural Products II: Chemistry and Biology. (Vol. 1). pp.349. Elsevier
14 Zhao Y, Wen XS, Cui J, Wu WH. 2008. Separation, purification and property study of ${\beta}$-glucosidase and ${\alpha}$-galactosidase from fresh roots of Rehmannia glutinosa. Food Drug 11:12-15
15 Wei GD, Wen XS. 2014. Characteristics and kinetics of catalpol degradation and the effect of its degradation products on free radical scavenging. Pharmacogn Mag 10:S122-S129   DOI
16 Lee SJ, Hu WS, Chung JI, Jeong BY, Sung NJ. 2017b. The quality characteristics of low raffinose and stachyose (LRS) soybean cultivars and their tofu. J Life Sci 27:1299-1307
17 Liu GC, Du HQ, Liang L. 1992. Determination of catalpol in Rehmannia glutinosa by HPLC. Tradit Herb Drug 23:71-73
18 Ministry of Agriculture, Food and Rural Affairs [MAFRA]. 2017. 2016 An Actual Output of Crop for a Special Purpose. pp. 88-91. Ministry of Agriculture, Food and Rural Affairs
19 Mital BK, Steinkraus KH, Naylor HB. 1974. Growth of lactic acid bacteria in soymilk. J Food Sci 39:1018-1022   DOI
20 Murphy EL, Horsley H, Burr HK. 1972. Fractionation of dry bean extracts which increase carbon dioxide egestion in human flatus. J Agr Food Chem 20:813-817   DOI
21 Oh HL, Kim NY, Lee KJ, Yang KH, Doh ES, Song MR, Park JY, Kim MR. 2012. Proximate, mineral and sugar composition of Rehmannia glutinosa by cultivars. J East Asian Soc Diet Life 22:365-370
22 Oshio H, Naruse Y, Inouye H. 1981. Quantitative analysis of iridoid glycosides of Rehmanniae radix. Shoyakugaku Zasshi 35:291-294
23 Konno K, Hirayama C, Yasui H, Nakamura M. 1999. Enzymatic activation of oleuropein: A protein crosslinker used as a chemical defense in the privet tree. P Natl Acad Sci 96:9159-9164   DOI
24 Rosi I, Vinella M, Domizio P. 1994. Characterization of ${\beta}$-glucosidase activity in yeasts of oenological origin. J Appl Microbiol 77:519-527
25 Shin HH, Choi HT, Choi DW. 1997. Study on prodiction and properties of galactooligosaccharide from soybean arabinogalactan. Korean J Food Nutr 10:497-502
26 Thananunkul D, Tanaka M, Chichester CO, Lee TC. 1976. Degradation of raffinose and stachyose in soybean milk by a ${\alpha}$-galactosidase from Mortierella vinacea, entrapment of ${\alpha}$-galactosidase within polyacrylamide gel. J Food Sci 41:173-175   DOI
27 Kim DH, Park CH, Park HW, Park CG, Sung JS, Yu HS, Kim GS, Seong NS, Kim JC, Kim MS, Bae SG, Chung BJ. 2008. A new high-quality, disease resistance and high yielding Rehmannia glutinosa cultivar, "Kokang". Korean J Breed Sci 40:84-87
28 Kim HY, Woo KS, Hwang IG, Lee YR, Jeong HS. 2008. Effects of heat treatments on the antioxidant activities of fruits and vegetables. Korean J Food Sci Technol 40:166-170
29 Lee HJ, Park HO, Lee KH, Ku SJ. 1995. A study on the relation between the contents of tannin, free amino acid, reducing sugar and chlorophyll and sensory evaluation of the 7 kinds of edible grass by cooking. Korean J Food Nutr 8:199-205
30 LeBlanc JG, Silvestroni A, Connes C, Juillard V, de Giori GS, Piard JC, Sesma F. 2004. Reduction of non-digestible oligosaccharides in soymilk: Application of engineered lactic acid bacteria that produce ${\alpha}$-galactosidase. Genet Mol Res 3:432-440
31 Lee SE, Seong NS, Park CG, Seong JS. 2002. Screening for antioxidative activity of oriental medicinal plant materials. Korean J Med Crop Sci 10:171-176
32 Lee SH, Song EM, Jang GY, Li M, Kim MY, Park HJ, Kang TS, Jeong HS. 2013. Physicochemical characteristics and antioxidant activities of Doragi (Platycodon grandiflorum) at different aging temperatures and for various durations. J Korean Soc Food Sci Nutr 42:1405-1411   DOI
33 Lee SH, Yoon JS, Kim JK, Park CG, Kim SC, Jung CS, Chang JK, Kim YB. 2017a. Aucubin, catalpol and GABA contents in different plant parts of Rehmannia glutinosa cultivars. Korean J Med Crop Sci 25:16-21   DOI