ABSTRACTUndesired browning of Parmesan cheese can occur during the latter period of ripening and cold storage despite the relative absence of reducing sugars and high temperatures typically associated with Maillard browning. Highly reactive α-dicarbonyls such as methylglyoxal (MG) are products ...

The accumulation of excess white adipose tissue (WAT) has harmful consequences on metabolic health. WAT browning confers beneficial effects on adiposity, insulin resistance and hyperlipidaemia. In this study, it was found out that circNrxn2 sponged miR-103, and enhanced FGF10 levels in HFD mice ...

The effect of three extraction methods on fucoidan heterogeneity from Ecklonia maxima, Laminaria pallida and Splachnidium rugosum were assessed. The highest fucoidan content was obtained using hot water extraction with Splachnidium rugosum containing ~5 times more L-fucose (265 ± 49.2 mg/g) tha...

Differences in tax levels for diesel oil stimulate the illegal removal of characteristic diazo compounds purposely added to designate its possible usage. In order to reduce the losses in the national income, there is a strong need to develop a sensitive and cost-effective analytical procedure fo...

We describe detailed procedures for the chemical synthesis of two costly chromogenic substrates, H-D-Val-L-Pro-L-Arg-p-nitroanilide (S2288) and H-D-Val-L-Leu-L-Lys-p-nitroanilide (S2251), which are widely employed for assay of tissue plasminogen activator and plasmin, respectively, as well as in...

Five new prenylated acetophenones, melicoptelins A-E (1–5), along with one known congener (6) were isolated from the roots of Melicope ptelefolia. Among them, compounds 2a/2b, 3a/3b, and 4a/4b were obtained as inseparable interconverting mixtures of keto and enol tautomers. Their structures wer...

Publisher SummarySome of the preparative methods for alkyl phenols and their reactions are unique to this class, and both, therefore, warrant separate treatment from the parent compound. These features are even more prevalent in the hindered phenols, which is a group of substances first synthesi...

The vapor, liquid and CCl4 solution infrared spectra of cis- and trans-1,2-dimethoxyethylene were recorded in the region 250–4000 cm−1. The laser-Raman spectra were obtained in the liquid state only. The vibrational spectra show that at least two rotational isomers exist for each molecule. Furt...

The solution properties of mixed amphiphiles system play a promising role in the surface chemical applications. Aggregation behavior of two cationic surfactants as tetradecyltrimethylammonium bromide (TTAB) and cetyltrimethylammonium bromide (CTAB) has been taken into account in detail using con...

Polyolefin-based anion exchange membranes (AEMs) with well-defined ionic domains for anion transport were synthesized by introducing bulky poly(4-phenyl-1-butene) (P4PB) moieties into quaternized polyolefinic copolymers via heterogeneous catalytic copolymerization of 4-phenyl-1-butene with 11-br...

Reactions of arylhydrazines (phenyl, 2-nitrophenyl, 4-nitrophenyl, 2,4-dinitrophenyl, pentafluorophenyl, 4-trifluoromethyl-2,3,5,6-tetrafluorophenylhydrazine or 4,4′-dihydrazinooctafluorobiphenyl) with perfluoro-2-methyl-2-pentene in the presence of triethylamine have effectively produced 1-ary...

In this work, nanoporous nickel-copper sulfide on carbon cloth was successfully prepared via sulfurizing the nickel-copper carbonate hydroxide precursor through an anion exchange reaction. The as-fabricated electrode exhibits a high specific capacitance of 938.6 F g−1 at a current density of 1 A...

Within the framework of recycling and reusing carbon fibre, this study focused on the fabrication of a thermoelectric composite encompassing recycled carbon fibre and two thermoelectric fillers (i) bismuth telluride and (ii) bismuth sulphide. This study investigated the effect of the concentrati...

The synthesis and in vitro cytotoxicity of cis-(glycolato-O,O′)[2-substituted-(4R,5R)-4,5-bis(aminomethyl)-1,3-dioxolane]platinum(II) are described. Among them, cis-(glycolato-O,O′)[(4R,5R)-4,5-bis(aminomethyl)-2,2-diethyl-1,3-dioxolane]platinum(II) (26) was found to be almost equally cytotoxi...

Twenty-nine specimens of calcareous sponges (Class Calcarea, Phylum Porifera), covering thirteen representative species of the families Soleneiscidae, Leucaltidae, Levinellidae, Leucettidae, Clathrinidae, Sycettidae, Grantiidae, Jenkinidae, and Heteropiidae were analysed for their fatty acids. T...

The fatty acid composition of whole phospholipids from marine sponges collected from the Colombian Caribbean Sea was determined as part of our studies on the order Halichondrida: Halichondria magniconulosa, Halichondria lutea, Petromica ciocalyptoides, Axinyssa ambrosia, Didiscus oxeata and Drag...

The presence of 7-O-acyl okadaic acid (OA) esters was studied by LC–MS in the digestive glands of blue mussel (Mytilus galloprovincialis) and common cockle (Cerastoderma edule) from Albufeira lagoon, located 20 km south of Lisbon. The profile of free and total fatty acids (FA) was analysed usin...

Fatty acids in products claimed to contain oils with the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were analyzed as fatty acid methyl esters by gas chromatography–mass spectrometry using electron impact ionization. To cover the variation in products on the m...

Fatty acid methyl esters from marine sources were analyzed by gas chromatography–mass spectrometry on three ionic liquid columns, SLB-IL61, SLB-IL82 and SLB-IL100 (Supelco). Retention indices (equivalent chain lengths) are reported for more than 100 compounds and the overlap patterns are evalua...

The isoprenoid fatty acid, 4,8,12-trimethyltridecanoic (1), was found to be a major constituent of the phospholipids of the marine sponges Anthosigmella varians and Spheciospongia vesparium (family Spirastrellidae) as well as of Cliona aprica (family Clionidae). These preliminary results tend to...