کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7062451 | 1459519 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterisation of native starches of seeds of Araucaria angustifolia from four germplasm collections
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Characterisation of native starches of seeds of Araucaria angustifolia from four germplasm collections Characterisation of native starches of seeds of Araucaria angustifolia from four germplasm collections](/preview/png/7062451.png)
چکیده انگلیسی
Germplasm is a source of genetic variability available for plant breeding. These techniques have become accessible and necessary to protect biological diversity. The collections are groups of representative genotypes with the genetic variability of the species that is the object of conservation. Four samples of pinhão, obtained from Paraná pine seeds, were supplied by EMBRAPA Florestas (germplasm bank). Starch was carefully extracted in aqueous solution, whose yield was around 32.5%. For each sample the gelatinisation temperature (Tp) occurred below 63.6 °C and gelatinisation enthalpy (ÎHgel) was different for each sample. TG-DTA curves showed similarity, although with mass losses and peaks at different temperatures. The pasting temperature obtained by RVA was directly proportional to the onset and peak temperatures obtained by DSC. The XRD technique allowed the degree of relative crystallinity to be calculated for each sample. From the results it can be verified that each sample had specific characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 565, 10 August 2013, Pages 172-177
Journal: Thermochimica Acta - Volume 565, 10 August 2013, Pages 172-177
نویسندگان
Fernanda Janaina Oliveira Gomes da Costa, Carolina Lopes Leivas, Nina Waszczynskyj, Rossana Catie Bueno de Godoi, Cristiane Vieira Helm, Tiago André Denck Colman, Egon Schnitzler,