کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8329974 | 1540238 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of medium chain length polyhydroxyalkanoate produced from olive oil deodorizer distillate
ترجمه فارسی عنوان
مشخصه پلی هیدروکسی آلکینوات زنجیره متوسط تولید شده از تقطیر دیودوریزه روغن زیتون
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
چکیده انگلیسی
Olive oil deodorizer distillate (OODD) was used for the first time as the sole substrate for polyhydroxyalkanoates (PHA) production by the bacterium Pseudomonas resinovorans in bioreactor cultivation. A PHA content in the biomass of 36 ± 0.8 wt% was attained within 19 h of cultivation. A final polymer concentration of 4.7 ± 0.3 g Lâ1 was reached, corresponding to a volumetric productivity of 5.9 ± 0.2 g Lâ1 dayâ1. The PHA was composed of 3-hydroxyoctanoate (48.3 ± 7.3 mol%), 3-hydroxydecanoate (31.6 ± 2.6 mol%), 3-hydroxyhexanoate (12.1 ± 1.1 mol%) and 3-hydroxydodecanoate (8.0 ± 0.7 mol%) and it had a glue-like consistency that did not solidify at room temperature. The polymer was highly amorphous, as shown by its low crystallinity of 6 ± 0.2%, with low melting and glass transition temperatures of 36 ± 1.2 and â16 ± 0.8 °C, respectively. The polymer exhibited a shear thinning behavior and a mechanical spectrum with a predominant viscous contribution. Its shear bond strength for wood (67 ± 9.4 kPa) and glass (65 ± 7.3 kPa) suggests it may be used for the development of biobased glues.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 82, January 2016, Pages 243-248
Journal: International Journal of Biological Macromolecules - Volume 82, January 2016, Pages 243-248
نویسندگان
Madalena V. Cruz, Diana Araújo, VÃtor D. Alves, Filomena Freitas, Maria A.M. Reis,