Certain strains of Moraxella bovis produce tissue-damaging enzymes which may initiate or potentiate infectious bovine keratoconjunctivitis. Thirteen reference strains of this species were characterized physiologically and screened for production of various enzymes by some conventional biochemical tests and the API ZYM system (Analytab Products, Plainview, N.Y.). All 13 strains were hemolytic. A...

The effects of Tween-20 and Zn(II) on ethylbenzene removal were evaluated using two biotrickling filters (BTFs), BTF1 and BTF2. Only BTF1 was fed with Tween-20 and Zn(II). Results show that ethylbenzene removal decreased from 94% to 69% for BTF1 and from 74% to 54% for BTF2 with increased organic loading from 64.8 to 189.0 g ethylbenzene/(m³·hr) at EBRT of 40 sec. The effect of EBRT (60-15 sec)...

In the present study, statistically based experimental design was applied for the optimization of bacteriocin production by Lactobacillus plantarum ATM11 isolated from goat slaughter house soil. Seven variables were chosen for Plackett-Burman design, in which three variables were screened as influencing factors: yeast extract, Tween 80 and K2HPO4. These three factors were subsequently optimized...

introduction: the aim of this in vitro study was to evaluate the effect of an experimental irrigation solution, containing two different concentrations of papain, tween 80, 2% chlorhexidine and edta, on removal of the smear layer. methods and materials: thirty-six single-rooted teeth were divided into two experimental groups ( n =12) and two positive and negative control groups of six. the cana...

Dalam pembuatan kosmetik salah satu proses yang paling penting adalah pengemulsian air dan minyak. Agar kedua bahan ini dapat menyatu di butuhkan emulsifier yaitu Tween 80. Penelitian bertujuan untuk mengetahui pengaruh tween 80 waktu pengadukan terhadap karakteristik meliputi nilai viskositas, bobot jenis, pH homogenitas berdasarkan SNI-163499-1996. Proses pencampuran dilakukan dengan memvaria...

In this work, sugar beet pulp (SBP) as a lignin poor biomass and corn cob (CC) rich were subjected to enzymatic hydrolysis see the effects of various variables on reducing yield. SBP hydrolysis, response surface methodology (RSM) ANOVA used fit yield determine significance parameters (substrate, pectinase, cellulase time). The proposed quadratic model gave an adequate approximation indicating a...

Background: Xanthomonas campestris is a biopolymer producing gram negative bacterium. Production of xanthan biopolymer can be affected by different extrinsic factors as well as surfactants. Hitherto, effects of nonionic surfactants on xanthan production have been studied in a limited number of articles.Objective: In the present study, nonionic surfactants...