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Shenchi Zhao,Xin Liu,Gongshe Hu,Xi Liang,Chengguo Liu,Qian Liu 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.9
The rheological behaviors, structural propertiesand freeze-thaw stability of starch isolated from Tetoniabarley (Normal genotype, Reg. No. CV-334, PI 646199)and Transit barley (Waxy genotype, Reg. No. CV-348, PI660128) were investigated, along with other commonstarch sources for comparison. Transit barley starchshowed the highest loss tangents (tan d) during a frequencysweep test, which suggested a predominance of elasticproperties over viscous properties. However, the tan d ofTetonia barley starch was similar to that of potato starch,which indicated more solidity in comparison to Transitbarley starch. Transit barley starch had the highest gelatinizationtemperature and the lowest gelatinizationenthalpy (P\0.05). Moreover, Tetonia and Transit barleystarches displayed weak diffraction peak intensities byX-ray diffraction analysis. Additionally, Transit barleystarch showed the lowest % syneresis even when freeze–thawed up to five cycles (P\0.05). However, Tetoniabarley starch had the worst freeze–thaw stability(P\0.05), which was verified via scanning electronmicroscopy analysis of freeze–thawed starch gels. Theresults of present study indicate that barley starch can bepractically applied as a functional ingredient in somespecialty starchy foods.
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Adjustable wavelength and lifetime in Mn4+ ion doped phosphate glasses
Chengguo Ming,Hanxiong Liu,Feng Song,Xiaobin Ren,Liqun An,Yanming Hao,Gangzhi Wang 한국물리학회 2013 Current Applied Physics Vol.13 No.6
Phosphate glasses doped with Mn4þ ion were prepared using high temperature melting method. Under 408 nm excitation, the peak wavelength and lifetime of the fluorescence are related to the Mn4þ ion concentration. With the increasing of Mn4þ ion concentration, the fluorescence wavelength varies from 605 nm to 685 nm and the lifetime increases from several microseconds to one millisecond. The fluorescence wavelength is variable and the lifetime is tunable for our materials.
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Chengguo Pei,Xu Liu,Wenying Wang,Hanfeng Ding,Mingsong Jiang,Guangxian Li,ChangXiang Zhu,FuJiang Wen,Fangyin Yao 한국식물학회 2011 Journal of Plant Biology Vol.54 No.3
Heading date is one of the importance agronomic traits. A library consisting of 1,123 single segment substitution lines (SSSLs) in the same genetic background of an elite rice variety Huajingxian 74 (HJX74) was evaluated for heading date (HD). From this library, the SSSL W06-26-35-1-5-2 with the substituted interval of PSM152–PSM154–PSM155–RM25–RM547–RM72–RM404 was found having a gene, which performed stable and late heading in the different environments of Shandong and Hainan provinces. To map the gene governing heading date, the SSSL W06-26-35-1-5-2 was crossed with the recipient HJX74 to develop an F_2 segregating population. The distribution of late and early heading plants in this population fitted a segregation ratio of 3:1, indicating the late heading was controlled by a dominant gene. The gene locus for heading date was tentatively designated as qHD8-1. Using a random sample of 460 individuals from the F_2population, the qHD8-1 was narrowed down to a region flanking by two SSR markers PSM155 and RM547. For fine mapping of qHD8-1, a large F_2:3 segregating population of 3,000 individuals were developed from F_2 plants heterozygous in the PSM155–RM547 region. Recombinants analysis further mapped qHD8-1 to an interval of region 26 kb with markers RM22492 and P23 bounded on the left and right sides, respectively. Sequence analysis of this 26-kb fragment revealed that it contains five putative open reading frames,which were regarded as candidates of qHD8-1. These results will be useful in cloning of the qHD8-1 gene
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