The effect of different hydrophobic substances on water vapor permeability (WVP) of unmodified fish gelatin films and cross-linked with transglutaminase (TGase) or with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) was determined. Both unmodified and cross-linked films were characterized ...
The effect of cross-linking of fish-skin gelatin with transglutaminase (TGase) on solubility, mechanical and barrier properties of prepared films was determined. For comparison, parallel experiments were made with films chemically modified with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC...
1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) was tested for interference with the Lowry method of protein determination. The EDC interference was nearly additive at both 660 and 750 nm. Blue-colored complex developed in the case of EDC and showed maximum absorbance at 750 nm, similar to ...
PurposeTo determine if impregnating a suture with a cross-linking agent, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC), improved suture pull-out strength and cell viability.
In this study biodiesel was produced from waste sunflower cooking oil and ethanol using N,N′,N″-tris(3-dimethylaminopropyl)-guanidine as new catalyst, which allows to avoid unwanted side-reaction of saponification. The influence of process variables on the conversion was investigated using exp...
SummaryAn unknown signal at 2.93 ppm in 1H-NMR spectra of rice, Oryza sativa, was assigned to the methyl groups of sulphur-methylmethionine (SMM), thereby devising a new method for the determination of this compound. Rice seedlings growing aerobically in the dark and in the light engaged for the...
A method is presented for determining the levels of S-methylmethionine (MeMet) and S-adenosylmethionine (AdoMet) in the same plant tissue sample, utilizing readily available equipment. The bottom limit of sensitivity, ca. 100 pmol, can be lowered if required. A trichloracetic acid homogenate of ...
By altering the pH of the 4.26 buffer employed in the Spackman, Stein, and Moore automated system for amino acids analysis, S-methylmethionine ion was separated from other amio acids of some plant extracts. The content of this substance in several vegetables is reported.
S-methyl-l-methionine (SMM) is ubiquitous in the tissues of flowering plants, but its precise function remains unknown. It is both a substrate and an inhibitor of the pyridoxal 5′-phosphate-dependent enzyme 1-aminocyclopropane-1-carboxylate (ACC) synthase, due to its structural similarity to th...
Cystathionine γ-synthase (CGS, EC 4.2.99.9), the first committed enzyme in methionine biosynthesis, was over-expressed in Arabidopsis thaliana by introducing in the genome of this plant the coding sequence of the Arabidopsis enzyme under the control of the cauliflower mosaic virus 35S promoter....
SummaryS-methylmethionine (SMM), an important intermediate compound in the sulphur metabolism, can be found in various quantities in majority of plants. The experiments were designed to determine the extent to which SMM is able to preserve cell membrane integrity or reduce the degree of membrane...
A procedure for the extraction of free amino acids was applied to isolate S-methylmethionine (SMM) from late harvest Petit Manseng grapes. Grapes were destemmed and crushed, and the obtained clarified must was percolated through cation-exchange resins (Dowex 50 WX4-100). The retained compounds w...
The organophosphorus analogues of the biologically significant sulfonium compounds S-adenosylmethionine and S-methylmethionine are much more stable than their carboxylic prototypes.
I develop and analytically solve the stochastic Romer model in which the creation of ideas is driven by a stochastic process. I show that higher uncertainty about R&D, through the reallocation effects of resources among sectors, slows down economic growth and deteriorates welfare. The results su...
The high-performance liquid chromatographic separation of a relative large series of simple phenolics and related substances by means of a reversed-phase system is described. The system consists of a LiChrosorb RP-18 (10 μm) Knauer column and a combination of isocratic and linear-gradient eluti...
The pore size of hexagonal mesoporous carbon nitride (HMCN) materials were engineered with different pore sizes of 3.5, 4.7, 5.9, 7.1, 7.9 and 9.2 nm using SBA-15 hard template synthesised at 80, 100, 120, 150, 160 and 180 °C, respectively. HMCN (x) and SBA-15 (x) materials were characterized b...
TMCA (3,4,5-trimethoxycinnamic acid) ester and amide are privileged structural scaffolds in drug discovery which are widely distributed in natural products and consequently produced diverse therapeutically relevant pharmacological functions. Owing to the potential of TMCA ester and amide analogu...
Various cyclodextrins, alpha, beta and gamma, were esterified with 4-methoxy-, 2,4,5- and 2,4,6-trimethoxycinnamic acids. Upon esterification with β-cyclodextrin, the photostability of 2,4,5-trimethoxycinnamate increased while no improvement was observed for 4-methoxycinnamate and 2,4,6-trimeth...
Nitidine chloride (NC), a natural bioactive alkaloid derived from Zanthoxylum nitidum (Roxb) DC, has been shown to have inhibitory effects on various tumors. However, whether NC could exert anti-cancer activity and the underlying mechanisms have not been elucidated in renal cancer cells. In this...
Ethnopharmacological relevanceZanthoxylum nitidium (Roxb.) DC. has long been used as a traditional herbal medicine for inflammatory diseases such as rheumatic arthritis and peridentitis. However, the anti-inflammatory mechanism of Nitidine chloride has not been fully elucidated.
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