Optical chemical sensors can yield distinctively different responses that are dependent on the method applied for readout and evaluation. We therefore present a comprehensive study pH determined non-continuously with optical in real milk samples by either photometry or colorimetry (via RGB-readout of digital images) compared to values obtained electrochemically potentiometry. Additionally, phot...

An agar medium containing arginine and calcium citrate as specific substrates, diffusible (K(2)HPO(4)) and undiffusible (CaCO(3)) buffer systems, and bromocresol purple as the pH indicator was developed to differentiate among lactic streptococci in pure and mixed cultures. Milk was added as the sole source of carbohydrate (lactose) and to provide growth-stimulating factors. Production of acid f...

The use of antibiotic growth promoter as a feed additive for animals in Indonesia has been prohibited and regulated law, starting from January 1, 2018. Alternative replacement was investigatedand introduced to farms such probiotic. commonly used probiotic the genus Lactobacillus, Bifidobacterium , Bacillus. aim this study identify Lactobacillus strains isolates Jawa Super chicken excreta. Ident...

BACKGROUND Serum/plasma albumin is an important predictor of future mortality/morbidity in haemodialysis (HD) patients and has been proposed as an important audit measure. Different methods of albumin assay give different results and the bias between methods may be greater in renal failure patients. METHODS Albumin concentration in plasma was measured by three methods, two dye-binding methods...

The concentration of human serum albumin (HSA) indicates the health state of individuals and is routinely measured by UV spectroscopy with bromocresol. However, this method tends to overestimate HSA, and more critically, depends highly on the timing, in seconds, of the measurements. Here, we report an analog of 2',7'-dichlorofluorescein that can be used as a fluorescent sensor to quantify HSA i...