Green oxidation of bio-lactic acid with H2O2 into tartronic acid under UV irradiation

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 41007-41010 ◽  
Author(s):  
Xuxia Tian ◽  
Zhijian Wang ◽  
Pengju Yang ◽  
Ruipeng Hao ◽  
Suping Jia ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Uv Irradiation ◽  
Green Oxidation ◽  
Tartronic Acid

Lactic acid was photochemically converted into tartronic acid via green oxidation by using H2O2.

Enzymatic Degradation of Poly(l-Lactic Acid): Effects of UV Irradiation

2006 ◽  
Vol 14 (3) ◽  
pp. 239-248 ◽  
Author(s):  
Hideto Tsuji ◽  
Yoshihisa Echizen ◽  
Yoshiro Nishimura
Keyword(s):  
Lactic Acid ◽  
Uv Irradiation ◽  
Enzymatic Degradation

Ageing of plasticized poly(lactic acid)/poly(β-hydroxybutyrate) blend films under artificial UV irradiation and under real agricultural conditions during their application as mulches‡

2016 ◽  
Vol 70 (9) ◽  
Author(s):  
Katarína Mosnáčková ◽  
Alena Šišková ◽  
Ivica Janigová ◽  
Jozef Kollár ◽  
Miroslav Šlosár ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Uv Irradiation ◽  
Poly Lactic Acid ◽  
Natural Ageing ◽  
Blend Films ◽  
Artificial Uv

AbstractThe paper is aimed on the investigation of natural ageing of plasticized poly(lactic acid)/poly(

Copolymers from epoxidized soybean oil and lactic acid oligomers for pressure-sensitive adhesives

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27256-27265 ◽  
Author(s):  
Yonghui Li ◽  
Donghai Wang ◽  
Xiuzhi Susan Sun
Keyword(s):  
Lactic Acid ◽  
Soybean Oil ◽  
Uv Irradiation ◽  
Epoxidized Soybean Oil ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive

Corn based lactic acid oligomers and soybean based epoxidized oil were copolymerized under UV irradiation for biobased pressure-sensitive adhesives (PSA).

Photodegradation of Poly(lactic acid) Stereocomplex by UV-Irradiation

2012 ◽  
Vol 20 (3) ◽  
pp. 706-712 ◽  
Author(s):  
Hideto Tsuji ◽  
Hiroaki Sugiyama ◽  
Yoshihiro Sato
Keyword(s):  
Lactic Acid ◽  
Uv Irradiation ◽  
Poly Lactic Acid

Preparation and Properties of Nanocomposites Based on Poly(Lactic Acid) and Modified TiO2

2012 ◽  
Vol 463-464 ◽  
pp. 519-522 ◽  
Author(s):  
Achanai Buasri ◽  
Nattawut Chaiyut ◽  
Chanon Kritsanakun ◽  
Chettha Phatkun ◽  
Tiwiwan Khunsri
Keyword(s):  
Lactic Acid ◽  
Propionic Acid ◽  
Uv Irradiation ◽  
Nano Particles ◽  
Poly Lactic Acid ◽  
Nano Composites ◽  
Nano Particle ◽  
High Transparency ◽  
Wide Range ◽  
Ft Ir

In this study, poly (lactic acid) (PLA)-TiO2nano particle nano composites were prepared and the severe aggregation of TiO2nano particles in polymer matrixwere reduced by themodification of TiO2surface with propionic acid and n-hexylamine. The resulting products were characterized by FT-IR, DSCand SEMtechniques so as to have a better understanding of bondingbetween the polymer and nano particles. All of nano composites with a wide range of TiO2additionexhibit the high transparency. SEM micrographs of the nano composites showed of the TiO2nano particles were uniformly dispersed in polymer matrices. Photodegradation of PLA-TiO2nano particle nano composites were also investigated. The results indicated that nano composites could be efficiently photodegraded by UV irradiation in comparison with pure PLA.

scholarly journals Effect of lactic acid and UV irradiation on the cassava and corn starches

2010 ◽  
Vol 53 (2) ◽  
pp. 443-454 ◽  
Author(s):  
Célia Maria Landi Franco ◽  
Cristina Ogawa ◽  
Taís Rabachini ◽  
Thais de Souza Rocha ◽  
Marney Pascoli Cereda ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Lactic Acid ◽  
Uv Irradiation ◽  
Corn Starch ◽  
Structural Characteristics ◽  
Cassava Starch ◽  
Internal Stability ◽  
Modified Starches ◽  
Branched Chains ◽  
Expansion Capacity

In this work, the effect of lactic acid and UV irradiation on the physicochemical and structural characteristics of cassava and corn starches was evaluated. Only the modified cassava starch presented baking expansion capacity. From RVA, reduction of viscosity values, greater internal stability and none set back for modified cassava starch were observed. Modified corn starch did not show any peak viscosity. There were no significant differences in DSC thermal properties of treated and native starches. Amylopectin and amylose molecules from both the modified starches displayed some degradation. Molecular weight of cassava amylopectin was mostly preserved, whereas corn amylopectin was evenly attacked through the granule. Nevertheless, the B long branched chains of cassava amylopectin, with DP~37, were degraded whereas they were unchanged for corn amylopectin.

Demonstration of Retinal Glycogen with Silver Methenamine

1971 ◽  
Vol 29 ◽  
pp. 564-565
Author(s):  
A. W. Sedar ◽  
G. H. Bresnick
Keyword(s):  
Lactic Acid ◽  
Chromic Acid ◽  
Periodic Acid ◽  
Müller Cell ◽  
External Limiting Membrane ◽  
Electron Microscope Level ◽  
Reactive Process ◽  
Inner Limiting Membrane ◽  
Muller Cell ◽  
And Migration

After experimetnal damage to the retina with a variety of procedures Müller cell hypertrophy and migration occurs. According to Kuwabara and others the reactive process in these injuries is evidenced by a marked increase in amount of glycogen in the Müller cells. These cells were considered originally supporting elements with fiber processes extending throughout the retina from inner limiting membrane to external limiting membrane, but are known now to have high lactic acid dehydrogenase activity and the ability to synthesize glycogen. Since the periodic acid-chromic acid-silver methenamine technique was shown to demonstrate glycogen at the electron microscope level, it was selected to react with glycogen in the fine processes of the Müller cell that ramify among the neural elements in various layers of the retina and demarcate these cells cytologically. The Rhesus monkey was chosen as an example of a well vascularized retina and the rabbit as an example of a avascular retina to explore the possibilities of the technique.

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