the chemiluminescence (cl) arising from the reaction of bis(2,4,6-trichlorophenyl)oxalate (tcpo) with h2o2 in the presence of a novel blue fluorescer, furandicarboxylate derivative, has been studied. the relationship between the cl intensity and concentrations of peroxyoxalate, sodium salicylate, h2o2 and furandicarboxylate derivative as fluorescer has been investigated. kinetic parameters for ...

A facile synthetic method was developed for a novel acid-sensitive camptothecin norcantharidin acid ester derivative I. The total yield can reach 71%. This method provides several advantages, including high yield and simple working procedure for the synthesis of analogues. The new synthetic compound I has been shown to exhibit better solubility and similar activity against tumour cell lines.

A novel versatile biocompatible hydrogel of whey protein isolate (WPI) and two types tannic acid (TAs) was prepared by crosslinking WPI with TAs in a one-step method at high temperature for 30 min. is one common protein-based preparation which used formation. The obtained WPI-TA hydrogels were disc form retained their integrity after sterilization autoclaving. Two TA preparations differing mole...

An efficient approach for the synthesis of norbuprenorphin derivatives through coupling of enkephalins and norbuprenorphine intermediate is described. Norbuprenorphine derivative was synthesized from thebaine and then, its reaction with succinic acid and phthalic acid was also studied. Meanwhile, the synthesis of enkephalins was done using solid phase peptide synthesis approach. Furthermore, af...

In Neurospora crassa three inducible enzymes are necessary to catabolize quinic acid to protocatechuic acid. The three genes encoding these enzymes are tightly linked on chromosome VII near methionine-7 (me-7). This qa cluster includes a fourth gene, qa-1, which encodes a regulatory protein apparently exerting positive control over transcription of the other three qa genes. However, an alternat...

This research revalues broccoli stalk by-product as a novel fermented health food, using its autochthonous microbiota. Broccoli slices were packed into glass jars, brine was added (6% w/v), and two dressings studied: garlic, mustard seeds. No dressing used control. Natural fermentation carried out at 25 °C for 6 days followed by further storage 4 °C. The identification of individual glucosinola...