scholarly journals Enzymatic Degradation of Sequential Polymers Containing a Tripeptide Sequence L-Alanine–L-Leucine–γ-Ethyl L-Glutamate and an α-Hydroxy Acid L-Lactic Acid or α-Amino Acid L-Alanine

1988 ◽  
Vol 20 (3) ◽  
pp. 281-284 ◽  
Author(s):  
Masaharu Asano ◽  
Masaru Yoshida ◽  
Isao Kaetsu ◽  
Ryoichi Katakai ◽  
Tooru Mashimo ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Amino Acid ◽  
Hydroxy Acid ◽  
Enzymatic Degradation

Synthesis, stereocomplex crystallization and homo-crystallization of enantiomeric poly(lactic acid-co-alanine)s with ester and amide linkages

2018 ◽  
Vol 9 (5) ◽  
pp. 565-575 ◽  
Author(s):  
Hideto Tsuji ◽  
Shotaro Sato ◽  
Noriaki Masaki ◽  
Yuki Arakawa ◽  
Akinori Kuzuya ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Amino Acid ◽  
Hydroxy Acid ◽  
Poly Lactic Acid

α-Hydroxy acid and α-amino acid-derived poly(l-lactic acid-co-l-alanine)s and poly(d-lactic acid-co-d-alanine)s with different alanine unit contents were synthesized and their stereocomplex crystallization and homo-crystallization were investigated.

Effects of Inoculating Compound Lactic Acid Bacteria on the Quality of Cured Fish

2014 ◽  
Vol 685 ◽  
pp. 486-489 ◽  
Author(s):  
Yan Yan Wu ◽  
Gang You ◽  
Lai Hao Li ◽  
Xian Qing Yang ◽  
Ya Wei
Keyword(s):  
Lactic Acid ◽  
Amino Acid ◽  
Lactic Acid Bacteria ◽  
Nitrogen Content ◽  
Acid Content ◽  
Total Acid ◽  
Fish Quality ◽  
Salted Fish ◽  
Positive Effects ◽  
Amino Acid Nitrogen

Inoculation with compound lactobacillus in the low-salt pickled fish, fermented and dried to produce cured fish. The paper studied the effects of inoculating compound lactobacillus on the pH, total volatile basic nitrogen (TVB-N), amino acid nitrogen content (AA-N) and total acid content of salted fish quality. The results showed that, compared with the non-vaccinated groups (CK), The cured fish inoculated lactobacillus had a lower pH and TVB-N content, higher the amino acid nitrogen content and total acid content. Inoculated compound lactic acid bacteria into salted fish, to a certain extent, could improve the nutritional value and edible value, which had positive effects on the fish quality.

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

scholarly journals Some metabolites of 1-bromobutane in the rabbit and the rat

1968 ◽  
Vol 109 (5) ◽  
pp. 727-736 ◽  
Author(s):  
Sybil P. James ◽  
D. A. Jeffery ◽  
Rosemary H. Waring ◽  
P. B. Wood
Keyword(s):  
Lactic Acid ◽  
Ethyl Ester ◽  
Rat Liver ◽  
Hydroxy Acid ◽  
Rabbit Liver ◽  
Mercapturic Acid ◽  
Acid Form ◽  
Rat Urine ◽  
Glycine Ethyl Ester

1. Rabbits and rats dosed with 1-bromobutane excrete in urine, in addition to butylmercapturic acid, (2-hydroxybutyl)mercapturic acid, (3-hydroxybutyl)mercapturic acid and 3-(butylthio)lactic acid. 2. Although both species excrete both the hydroxybutylmercapturic acids, only traces of the 2-isomer are excreted by the rabbit. The 3-isomer has been isolated from rabbit urine as the dicyclohexylammonium salt. 3. 3-(Butylthio)lactic acid is formed more readily in the rabbit; only traces are excreted by the rat. 4. Traces of the sulphoxide of butylmercapturic acid have been found in rat urine but not in rabbit urine. 5. In the rabbit about 14% and in the rat about 22% of the dose of 1-bromobutane is excreted in the form of the hydroxymercapturic acids. 6. Slices of rat liver incubated with S-butylcysteine or butylmercapturic acid form both (2-hydroxybutyl)mercapturic acid and (3-hydroxybutyl)mercapturic acid, but only the 3-hydroxy acid is formed by slices of rabbit liver. 7. S-Butylglutathione, S-butylcysteinylglycine and S-butylcysteine are excreted in bile by rats dosed with 1-bromobutane. 8. Rabbits and rats dosed with 1,2-epoxybutane excrete (2-hydroxybutyl)mercapturic acid to the extent of about 4% and 11% of the dose respectively. 9. The following have been synthesized: N-acetyl-S-(2-hydroxybutyl)-l-cysteine [(2-hydroxybutyl)mercapturic acid] and N-acetyl-S-(3-hydroxybutyl)-l-cysteine [(3-hydroxybutyl)mercapturic acid] isolated as dicyclohexylammonium salts, N-toluene-p-sulphonyl-S-(2-hydroxybutyl)-l-cysteine, S-butylglutathione and N-acetyl-S-butylcysteinyl-glycine ethyl ester.

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