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Extraction condition optimization and effects of drying methods on physicochemical properties and antioxidant activities of polysaccharides from comfrey (Symphytum officinale L.) root.
Int J Biol Macromol 2018; 112:889-899IJ

Abstract

This study was designed to investigate the extraction conditions of polysaccharides from comfrey (Symphytum officinale L.) root (CRPs) using response surface methodology (RSM). The effects of three variables including liquid-solid ratio, extraction time and extraction temperature on the extraction yield of CRPs were taken into consideration. Moreover, the effects of drying methods including hot air drying (HD), vacuum drying (VD) and freeze drying (FD) on the physicochemical properties and antioxidant activities of CRPs were evaluated. The optimal conditions to extract the polysaccharides were as follows: liquid-solid ratio (15mL/g), extraction time (74min), and extraction temperature (95°C), allowed a maximum polysaccharides yield of 22.87%. Different drying methods had significant effects on the physicochemical properties of CRPs such as the chemical composition (contents of total polysaccharides and uronic acid), relative viscosity, solubility and molecular weight. CRPs drying with FD method showed stronger reducing power and radical scavenging capacities against DPPH and ABTS radicals compared with CRPs drying with HD and VD methods. Therefore, freeze drying served as a good method for keeping the antioxidant activities of polysaccharides from comfrey root.

Authors+Show Affiliations

College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China; Key Laboratory of Animal Nutrition and Feed Science of Jilin Province, Jilin Agricultural University, Changchun 130118, PR China.College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China; Key Laboratory of Animal Nutrition and Feed Science of Jilin Province, Jilin Agricultural University, Changchun 130118, PR China.College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China.College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China.Grassland Research Institute of CAAS, Hohhot 010010, PR China.College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China; Key Laboratory of Animal Nutrition and Feed Science of Jilin Province, Jilin Agricultural University, Changchun 130118, PR China. Electronic address: louyujie@jlau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29428386

Citation

Shang, Hongmei, et al. "Extraction Condition Optimization and Effects of Drying Methods On Physicochemical Properties and Antioxidant Activities of Polysaccharides From Comfrey (Symphytum Officinale L.) Root." International Journal of Biological Macromolecules, vol. 112, 2018, pp. 889-899.
Shang H, Zhou H, Duan M, et al. Extraction condition optimization and effects of drying methods on physicochemical properties and antioxidant activities of polysaccharides from comfrey (Symphytum officinale L.) root. Int J Biol Macromol. 2018;112:889-899.
Shang, H., Zhou, H., Duan, M., Li, R., Wu, H., & Lou, Y. (2018). Extraction condition optimization and effects of drying methods on physicochemical properties and antioxidant activities of polysaccharides from comfrey (Symphytum officinale L.) root. International Journal of Biological Macromolecules, 112, pp. 889-899. doi:10.1016/j.ijbiomac.2018.01.198.
Shang H, et al. Extraction Condition Optimization and Effects of Drying Methods On Physicochemical Properties and Antioxidant Activities of Polysaccharides From Comfrey (Symphytum Officinale L.) Root. Int J Biol Macromol. 2018;112:889-899. PubMed PMID: 29428386.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Extraction condition optimization and effects of drying methods on physicochemical properties and antioxidant activities of polysaccharides from comfrey (Symphytum officinale L.) root. AU - Shang,Hongmei, AU - Zhou,Haizhu, AU - Duan,Mengying, AU - Li,Ran, AU - Wu,Hongxin, AU - Lou,Yujie, Y1 - 2018/02/09/ PY - 2017/09/15/received PY - 2017/11/09/revised PY - 2018/01/30/accepted PY - 2018/2/13/pubmed PY - 2018/9/11/medline PY - 2018/2/12/entrez KW - Drying method KW - Extraction condition KW - Symphytum officinale L. polysaccharides SP - 889 EP - 899 JF - International journal of biological macromolecules JO - Int. J. Biol. Macromol. VL - 112 N2 - This study was designed to investigate the extraction conditions of polysaccharides from comfrey (Symphytum officinale L.) root (CRPs) using response surface methodology (RSM). The effects of three variables including liquid-solid ratio, extraction time and extraction temperature on the extraction yield of CRPs were taken into consideration. Moreover, the effects of drying methods including hot air drying (HD), vacuum drying (VD) and freeze drying (FD) on the physicochemical properties and antioxidant activities of CRPs were evaluated. The optimal conditions to extract the polysaccharides were as follows: liquid-solid ratio (15mL/g), extraction time (74min), and extraction temperature (95°C), allowed a maximum polysaccharides yield of 22.87%. Different drying methods had significant effects on the physicochemical properties of CRPs such as the chemical composition (contents of total polysaccharides and uronic acid), relative viscosity, solubility and molecular weight. CRPs drying with FD method showed stronger reducing power and radical scavenging capacities against DPPH and ABTS radicals compared with CRPs drying with HD and VD methods. Therefore, freeze drying served as a good method for keeping the antioxidant activities of polysaccharides from comfrey root. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/29428386/Extraction_condition_optimization_and_effects_of_drying_methods_on_physicochemical_properties_and_antioxidant_activities_of_polysaccharides_from_comfrey__Symphytum_officinale_L___root_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0141-8130(17)33563-8 DB - PRIME DP - Unbound Medicine ER -