کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4364183 1616302 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Isolation of mesophilic bacterium for biodegradation of polypropylene
ترجمه فارسی عنوان
جداسازی باکتری مازوفیلی برای تجزیه بیولوژیکی پلی پروپیلن
کلمات کلیدی
پلی پروپیلن، تجزیه زیستی، باکتری مازوفیلی، کمپوست
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
چکیده انگلیسی


• A mesophilic polypropylene degrading strain was isolated and identified as Stenotrophomonas panacihumi PA3-2.
• S. panacihumi PA3-2 biodegraded not only Low molecular polypropylene but also high molecular polypropylene.
• S. panacihumi PA 3-2 biodegraded polyethylene, even though it was isolated as polypropylene degrading strain.

A mesophilic bacterium capable of polypropylene (PP) biodegradation was isolated from soil using a culture medium containing low molecular weight polypropylene (LMWPP) as a carbon source. The biodegradation of LMWPP and high molecular weight polypropylene (HMWPP), by the isolated bacterium, was measured under compost conditions. As produced PP has a broad molecular weight distribution so that it contains molecules with a wide spectrum of chain length, ranging from extremely low molecular weight to very high molecular weight. As the extremely low molecular weight fraction of PP may produce misleading results on biodegradability of PP, Soxhlet extraction using toluene was performed to obtain HMWPP, by dissolving out the extremely low molecular weight fractions from PP as produced from a commercial scale polymerization reactor. Previous research on PP biodegradation used PP compounded with pro-oxidants or with natural polymers, such as starch, or pretreated commercial-grade PP containing various additives, such as heat and light stabilizers. In contrast, the present study employed PP without any additives, to examine the true biodegradability of neat PP, excluding any effects of the additives.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 115, November 2016, Pages 244–249
نویسندگان
, ,