A neutral polysaccharide (yield 0.5%) has been extracted and isolated from the leaves of Bryophyllum pinnatum with 1% Acetic acid consisting of D-Galactose and L-arabinose in the Molar ratio of 2:4:1, Systematic chemical and spectral analysis for structural elucidation of the mucilage showed that it may be designated as "Arabinogalactan"

By using a gas balance technique, the effective oxidative phosphorylation ratio in glucose-limited continuous cultures of Candida parapsilosis was calculated to be 2.4 +/- 0.2. When this value was used, the molar growth yield with respect to adenosine 5'-triphosphate was found to be 10 g of cells produced per mol of ATP.

Highly fluorescent graphitic carbon nitride quantum dots (g-CNQDs) with a quantum yield of 42% are synthesized by a low-temperature solid-phase method with urea and sodium citrate as the precursors. Notably, the tunable emission of g-CNQDs can be achieved by simply adjusting the molar ratio of the two reactants.

Thirty-eight lactating dairy cows including 6 ruminally cannulated cows were used in a feeding study to assess effects of feed sources that differed in dietary nonfiber carbohydrate (NFC) composition and ruminal degradability of dietary protein (RDP) on production, ruminal, and plasma measures. The design was a partially balanced, incomplete Latin square with three 21-d periods and a 3 x 2 fact...

Thermothrix thiopara did not appear to be stressed at high temperature (72 degrees C). Both the actual and theoretical yields were higher than those of analogous mesophilic sulfur bacteria, and the specific growth rate (mu(max)) was more rapid than that of most autotrophs. The specific growth rate (0.58 h), specific maintenance rate (0.11 h), actual molar growth yield at mu(max) (Y(max) = 16 g ...

The synthesis of kojic acid derivative (KAD) from kojic and palmitic acid (C16:0) in the presence of immobilized lipase from Rhizomucor miehei (commercially known as Lipozyme RMIM), was studied using a shake flask system. Kojic acid is a polyfunctional heterocycles that acts as a source of nucleophile in this reaction allowing the formation of a lipophilic KAD. In this study, the source of bioc...

Pectins are important structural elements in spruce fibres. Alkaline peroxide bleaching of spruce thermomechanical pulp (TMP) causes degradation and demethylation of pectins, yielding high-charge-density pectic acids. The pectic acids in fibres contribute strongly to the negative fibre charge, and the dissolved pectic acids increase the cationic demand of bleached TMP water. In this study, a me...

The amounts of simian virus 40 structural polypeptides Vp1, Vp2, and Vp3 in different subcellular fractions at various times after lytic infection were determined by a quantitative immunoblotting procedure. Simian virus 40-infected cells were lysed with a buffer containing Nonidet P-40 to yield a soluble fraction. The Nonidet P-40-insoluble fraction was further fractionated in the presence of d...

The quantitation of fluorescence radiance may at first suggest the need to obtain the number of fluorophore that are responsible for the measured fluorescence radiance. This goal is beset by many difficulties since the fluorescence radiance depends on three parameters 1) the probability of absorbing a photon (molar extinction), 2) the number of fluorophores, and 3) the probability of radiative ...

The goal of this study is to reduce the production cost of biodiesel, so we used non edible oil (castor seeds oil) which has a unique structure; suitable for biodiesel production and has lower cost compared to other biodiesel from other vegetable oils. Reactive extraction via ultrasonicassisted process was used offering the potential for shorter reaction times, cheaper reagents and less insigni...