Multi-scale structure of A- and B-type granules of normal and waxy hull-less barley starch

被引:8
作者
Chen, Xiaojing [1 ]
Ma, Mengting [1 ]
Liu, Xingxun [2 ]
Zhang, Chuangchuang [1 ]
Xu, Zekun [1 ]
Li, Haitao [3 ]
Sui, Zhongquan [1 ]
Corke, Harold [4 ,5 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Agr & Biol, Dept Food Sci & Technol, Shanghai 200240, Peoples R China
[2] Nanjing Univ Finance & Econ, Lab Food Soft Matter Struct & Adv Mfg, Coll Food Sci & Engn, Nanjing 210023, Peoples R China
[3] Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
[4] Guangdong Technion Israel Inst Technol, Biotechnol & Food Engn Program, Shantou 515063, Peoples R China
[5] Technion Israel Inst Technol, Fac Biotechnol & Food Engn, IL-3200003 Haifa, Israel
关键词
Hull-less barley; Molecular structure; B-type granule; A-type granule; MOLECULAR-STRUCTURE; PHYSICOCHEMICAL PROPERTIES; A-TYPE; X-RAY; WHEAT; POTATO; SIZE; GELATINIZATION; DIGESTIBILITY; SOFT;
D O I
10.1016/j.ijbiomac.2021.12.092
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The multi-scale structure of combined (A-and B-type granules), A-type, and B-type granules from normal (NHB) and waxy hull-less barley (WHB) starch was studied, including crystalline structure, molecular branching, nanostructural and fractal characteristics. Particle size distribution was applied to determine the separation purity (>95%), and micrography was used to distinguish between the A-type and B-type granules. Lacking amylose, WHB had higher relative crystallinity, gelatinization temperature, enthalpy, level of scattering intensity and uniformity of orientation of double helices than NHB starch. Generally, B-type granules had higher gelatinization temperature, lower enthalpy, greater relative crystallinity, higher ratio of crystalline to amorphous region, more fa chains in amylopectin, and thicker semi-crystalline lamellae than A-type and combined granules. The results showed that the multi-scale structure of A-type and B-type granules differed greatly, and the characteristics of combined granules were not the same as those of its two constituent granule fractions.
引用
收藏
页码:42 / 49
页数:8
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