Insights into the structural and physicochemical properties of small granular starches from two hydrophyte duckweeds, Spirodela oligorrhiza and Lemna minor

Lei Chen; Changjiang Yu; Yubin Ma; Hua Xu; Shumin Wang; Yu Wang; Xingxun Liu; Gongke Zhou

doi:10.1016/j.carres.2016.10.010

Insights into the structural and physicochemical properties of small granular starches from two hydrophyte duckweeds, Spirodela oligorrhiza and Lemna minor

Carbohydr Res. 2016 Nov 29:435:208-214. doi: 10.1016/j.carres.2016.10.010. Epub 2016 Oct 26.

Authors

Lei Chen¹, Changjiang Yu², Yubin Ma³, Hua Xu³, Shumin Wang³, Yu Wang³, Xingxun Liu⁴, Gongke Zhou⁵

Affiliations

¹ The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
² Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
³ Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
⁴ Institute of Food Science and Technology (IFST), Chinese Academy of Agricultural Science (CAAS), Beijing 100193, China.
⁵ Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China. Electronic address: zhougk@qibebt.ac.cn.

PMID: 27816839
DOI: 10.1016/j.carres.2016.10.010

Abstract

The structure and physicochemical properties of starches from two hydrophyte duckweeds, Spirodela oligorrhiza and Lemna minor, were investigated and compared in this study. The amylose content and average size of starches were determined to be 20.85%, 4.70 μm and 27.77%, 6.17 μm for Spirodela oligorrhiza and Lemna minor, respectively. The average chain length of two duckweed starches was measured to be around DP 28. The chain length distribution was observed to be greatly different from other reported starches for the high proportion of long chains (DP ≥ 37) over 50%. Wide-angle X-ray diffraction profiles of the two starch samples displayed typical B-type diffraction pattern. The gelatinization enthalpy-changes (ΔH_gel) of two starch samples was about 10.40 J/g for two duckweed starches. The present results suggested the potential utilization of small granular starches from duckweed in functional foods and dietary supplement products.

Keywords: Duckweed; Physicochemical property; Small granule; Starch; Structure.

MeSH terms

Amylose / analysis
Araceae / chemistry*
Araceae / classification
Microscopy, Electron, Scanning
Particle Size
Starch / chemistry*
X-Ray Diffraction

Substances

Starch
Amylose