poly lactic acid pla poly glycolic acid pga and their copolymers

... the 76 fatty acids, 36 substances were identified by their mass spectrum and by retention time according to a standard substance, and the other 40 fatty acids were identified by their mass spectra ... α-linolenic acid; ARA: Arachidonic acid; CVA: canonical variance analysis; DHA: docosahexaenoic acid; DMOX: 4, 4-dimethyloxaline; EPA: Eicosapentaenoic acid; FA: fatty acid; FAME: fatty acid methyl ... 26 Keeling PJ: Diversity and evolutionary history of plastids and their hosts Am J Bot 2004, 91:1481-1493 27 Gould SB, Waller RF, McFadden GI: Plastid evolution Annu Rev Plant Biol 2008, 59:491-517...

Ngày tải lên: 11/08/2014, 11:21

... resilience RT % on knitted Ingeo Poly (lactic acid) (PLA) fabric Conclusion The effect of time of heatsetting on tensile properties of knitted Ingeo™ Poly (lactic acid) (PLA) was determined using the ... ‘’NatureWorks™’’ PLA, Biopolymers, Polyester III, Applications and commercial products [17] Serizawa, S (2006) Kenaf-fiber reinforced Polylactic acid used for electronics products J application of Polymer ... (2007) Polylactic acid fiber: An overview, Progress in Polymer Science, vol 32, pp.445-482, ISSN 1004-9541 [7] Mochizuki, M (2006) Properties and applications of aliphatic Polyester Products: Biopolymers...

Ngày tải lên: 05/09/2013, 16:10

... the plasma fluorination method (Teare et al 2002; Woodward et al 2003), among others (Bico et al 1999; Nakajima et al 1999; Genzer and Efimenko 2000; Nakajima et al, 2000) Poly( L -lactic acid) ... 24-well microtiter plate and carefully washed twice with NaCl 0.9% For each bacterium and material tested, four coupons were placed in a sterile eppendorf containing mL of NaCl 0.9% and vortexed vigorously ... colonization of (a) H PLLA surface and (b) SH PLLA surface; and P aeruginosa colonization of (c) H PLLA surface and (d) SH PLLA surface regardless of their Gram-type and morphology Nevertheless, a...

Ngày tải lên: 20/06/2014, 23:20

... thiệu Poly- gamma-glutamic acid 2.4.1 K hái niệm Poly- gamma-glutamic acid (γ -PGA ) hình thành từ đơn phân D L glutamic axit liên kết α-amino γ-carboxyl γ -PGA tạo dùng nguyên liệu glutamic acid, ... hòa áp suất thẩm thấu - Poly γ-D,L-glutamic acid: Trong chuỗi polyme chứa đồng phân dạng Dglutamic acid L-glutamic acid Tỷ lệ dạng đồng phân D- glutamic acid L- glutamic acid phụ thuộc loài vi ... nhiều cách phân loại γ -PGA phổ biến phân loại theo cấu trúc, theo cấu trúc γ -PGA chia làm loại là: - Poly γ-D-glutamic acid: Trong chuỗi polyme chứa đồng phân dạng D glutamic acid Bacillus anthracis...

Ngày tải lên: 01/09/2020, 12:00

... urethane)urea PGA : Poly( glycolic acid) PLGA : Poly( lactic- co -glycolic acid) PLLA : Poly( L -lactic acid) PMMA : Poly( methylmethacrylate) pNIPAM : Poly( N-isopropylacrylamide) PVA : Poly( vinyl alcohol) ... Poly( buthylene terephthalate) PBS : Phosphate buffered saline PCL : Poly( -caprolactone) PDGF : Platelet derived growth factor PDMS : Polydimethylsiloxane PEG : Poly( ethylene glycol) PEUU : Poly( ester ... embryonic stem cells (ESCs) in 3D porous poly( lactic- co -glycolic acid) (PLGA) had significantly higher expressions of ALP and OCN than those on TCPS plates coated with gelatin (2D control) [37]...

Ngày tải lên: 09/09/2015, 10:07

... motivation and purposes of this study, and finally the scope and organization 1.1 Overview of Poly( lactic acid) Poly( lactic acid) or Poly( lactide) (PLA) is a synthetic biopolymer of lactic acid, which ... and thermal history, PLA can be amorphous or crystalline, in general semicrystalline Both homopolymers poly( Llactic acid) or poly( L-lactide) (PLLA) and poly( D -lactic acid) or poly( D-lactide) (PDLA) ... displayed using “line” style H  C C H  H  Figure 1.4.Torsion angles around PLA polymer backbone bonds O-C, C-C and C-O 1.2 Poly( lactic acid) Polymorphs and Stereocomplex Polymer polymorphism,...

Ngày tải lên: 09/09/2015, 18:56

... polymers such as poly (lactic acid) (PLA) and poly( lactic- co -glycolic acid) (PLGA) and various biodegradable copolymers such as poly( lactic acid) -poly (ethylene glycol) (PLEA) copolymer and poly ... saline Poly Dispersity Index Polyethylene glycol Positron emission tomography Poly (lactic acid) Poly (lactic acid) -D-alpha-tocopheryl polyethylene glycol 1000 succinate Poly (lactic acid) -poly ... polyethylene glycol (PEG) and PEG-containing copolymers One important example of such a copolymer is poly (lactic acid) -D-alpha-tocopheryl polyethylene glycol 1000 succinate (PLA- TPGS) that is gaining...

Ngày tải lên: 13/10/2015, 15:54

... chống ung thư cao, gây độc thấp Màng PLLA/Bmattacin2 T UẤ X ĐỀ II MÀNG PLLA Polymer nhiệt dẻo, bán Poly L - lactic acid tinh thể, giòn rắn Ứng dụng màng Có khả phân hủy sinh bao thực phẩm, dẫn ... PLLA/Bmattacin2 Tính kháng khuẩn: Khảo sát đặc tính khác khuẩn màng PLLA/Bmattacin2 + Đối tượng: E coli and S aureus + Đối chứng âm: màng PLLA ĐẶC TÍNH MÀNG PLLA/BMATTACIN2 b Hiệu lực kháng khuẩn màng...

Ngày tải lên: 08/11/2016, 20:23

... dài cho PLA • Polyme bend PLA với polyme không phân hủy sinh học Các polyme không phân hủy sinh học thường polyme không phân cực (các polyolefin, cao su tự nhiên tổng hợp, polystiren…) hay polyme ... of starch/ polyetylene and starch polyetylene / poly ( lactic acid) composites”, Polymer Degradation and Stability, Vol 72, pp 509 - 517 19.J W Park, S S Im (2003), “ Miscibility and morpholoy ... solution of poly( L-lactide) and poly( P-vinyl phenol) blends”, polymer degration and stability, Vol 92, pp 1626-1631 42.N Reddy, D Nama, Y Yang (2008), “polylactic axit/polypropylene polyblend fibers...

Ngày tải lên: 31/07/2014, 17:49

... megaterium TSA or TSB VTCC-B-614 Lactobacillus plantarum MRSB, MRSA VTCC-B-701 Lactobacillus acidophilus MRSB, MRSA VTCC-B-871 Pediococcus acidilactici MRSB, MRSA VTCC-B-800 Saccharomyces cerevisiae ... vi sinh vật giàu vi khuẩn lactic acid thực phẩm lên men truyền thống sữa Tổng cộng có 50 mẫu nguyên liệu, sau trình sàng lọc qua môi trường chuyên biệt cho vi khuẩn lactic, kết thu 64 khuẩn lạc ... Bacillus, vi khuẩn lactic chế phẩm probiotics ứng dụng nhiều nuôi trồng thủy sản sử dụng chế phẩm chứa Lactobacillus bulgaricus, L acidophillus, L sporogenes, L casei, L plantarum, Streptococcus...

Ngày tải lên: 27/04/2014, 17:03

... (Amrane and Prigent, 1994) They proposed that the main contributors of yeast extract are the purine and pyridine bases and B group Figure Experimental and calculated dependence of lactic acid and ... citrate and acetate in the metabolism cycles could be the explanation The supplementation of CSL with citrate and acetate enhanced the economy of the lactic acid fermentation Ep=„ was 111 g lactic acid ... CSL, 98 g of lactic acid were produced per euro of nutrients while only 50 g lactic acid were obtained per euro when the Mercier medium was employed where t is time, P is lactic acid concentration,...

Ngày tải lên: 05/05/2014, 08:44

... Development of oriented morphology and mechanical properties upon drawing of stereo-complex of poly( L -lactic acid) and poly( D -lactic acid) by solid-state coextrusion Polym J 39, 953–960 Tanaka, T., ... of inexpensive and light-colored nitrogen source where W is the D -lactic acid yield (g/kg unpolished rice), L1 is the total D -lactic acid concentration (g/l), L0 is the D -lactic acid concentration ... composite design (CCD) was applied to find their appropriate dosage and predict maximum D -lactic acid concentration The variables and responses of D -lactic acid production were listed in Table Analysis...

Ngày tải lên: 05/05/2014, 08:44

... cells and lactic acid present in a surface liquid layer with known dimensions, the adapted model describes the concentrations of cells and lactic acid in a liquid medium Microbial growth and lactic ... The amount of undissociated lactic acid is then further related to the total amount of lactic acid LaHtot and the pH by the lactic acid chemical equilibrium As explained above, the approach of ... retardation and ceasing The metabolite under study in the model of Nicolaı ¨ et al is lactic acid, which inhibits microbial cell growth via two components, hydrogen ions and undissociated lactic acid...

Ngày tải lên: 05/05/2014, 08:44

... compositions and growth conditions (Lindgren and Dobrogosz 1990) Lactic acid is the major organic acid in LAB fermentation where it is in equilibrium with its undissociated and dissociated forms, and ... Conjugated bile acids are less inhibitory than free bile acids (cholic and deoxycholic acid, DCA) toward intestinal aerobic and anaerobic bacteria Taurine-conjugated deoxycholic acid (TDCA) was ... bacteria Base on their roles, the intestinal bacteria may be divided into two groups: LAB and putrefactive bacteria LAB are evaluated as beneficial bacteria by their product of acids (lactic acid) , bacteriocin...

Ngày tải lên: 07/07/2014, 19:20

... Gilliland SE, Nelson CR, Maxwell C Assimilation of cholesterol by Lactobacillus acidophilus Appl Environ Microbiol 1985, 49, 377-381 10 Gilliland SE Health and nutrition benefits from lactic acid ... Streptococcus and Lactobacillus) and pH 3.0 (for Bifidobacterium), respectively, by using N HCl, and put into ml per a ml vial Streptococcus and Lactobacillus were inoculated into MRS broth (pH 2.5) and ... broth, and that was anaerobically incubated at 37oC for 24 hrs with control MRS broth without bacterial culture Isolation of cholesterol-lowering lactic acid bacteria 393 Table Number of acid- and...

Ngày tải lên: 07/08/2014, 18:20

... developed by Bradley et al [42] and Xia and Zweier [43] The mice were sacrificed at the end of prophylactic protocol by CO2 and the ears were immediately remove and frozen quickly in liquid nitrogen ... MPM contains a variety of ingredients including whey proteins and peptides, LAB and their related exopolysaccharides, group B vitamins and calcium (Table 1) All these ingredients possess effects ... 41 42 43 44 Stiles ME, Holzapfel WH: Lactic acid bacteria of foods and their current taxonomy International Journal of Food Microbiology 1997, 36:1-29 Ouwehand AC, Salminen S, Isolauri E: Probiotics:...

Ngày tải lên: 11/08/2014, 08:21

... megaterium TSA or TSB VTCC-B-614 Lactobacillus plantarum MRSB, MRSA VTCC-B-701 Lactobacillus acidophilus MRSB, MRSA VTCC-B-871 Pediococcus acidilactici MRSB, MRSA VTCC-B-800 Saccharomyces cerevisiae ... vi sinh vật giàu vi khuẩn lactic acid thực phẩm lên men truyền thống sữa Tổng cộng có 50 mẫu nguyên liệu, sau trình sàng lọc qua môi trường chuyên biệt cho vi khuẩn lactic, kết thu 64 khuẩn lạc ... chủng Bacillus, vi khuẩn lactic chế phẩm probiotics ứng dụng nhiều nuôi trồng thủy sản sử dụng chế phẩm chứa Lactobacillus bulgaricus, L acidophillus, L sporogenes, L casei, L plantarum, Streptococcus...

Ngày tải lên: 21/11/2014, 03:59

... their precious friendship and help which making my stay in the laboratory a very enjoyable and memorable one i Also, Shi Wee, Juwita, Peirong, Emily, Shermine and Lydia for their friendship and ... etc., for their understanding and sharing of laughter and tears with me throughout this period Last but not least, I am always grateful to my family, especially my dearest husband, for their substantial ... B-cell activation and induces a Th1 type cytokine response (Cristofaro and Opal, 2006) TLR3 recognizes nucleic acids like TLR9, but confined to single-stranded (ss) and double-stranded (ds) RNA...

Ngày tải lên: 13/09/2015, 19:50

... hours Count density of lactic acid bacteria: plate counting method Monitor the indicators: Brix, pH, level of lactic acid after fermentation and the density of lactic acid bacteria Analyze the ... isolates were able to survive and grow at this pH The cause of the decrease in pH was due to the development of lactic acid bacteria that produced lactic acid Content of lactic acid produced from isolates ... fermented by lactic acid bacteria Objectives: Study on the conditions of mango juice fermentation by lactic acid bacteria 2 MATERIALS AND METHODS 2.1 Materials - Mango: Thanh Ca and Cat Chu -...

Ngày tải lên: 06/10/2015, 12:57

... temperature and time of lactic acid fermentation Besides, with the same inoculum and incubation time, lactic acid content and Lb helveticus density at 37ºC was higher than that at 30ºC and 28-32ºC, ... but also cancer and other diet related human disease (Beom et al., 1998) Objectives: To isolate and select lactic acid bacteria and to study the favorable conditions of lactic acid fermented carrot ... Isolation of lactic acid bacteria - Study on low pH tolerance of isolates - Study on lactic acid fermentation ability of isolates in carrot juice - Identification of the selected lactic acid bacteria...

Ngày tải lên: 06/10/2015, 13:04