The biosynthetic pathway of lutein, the most abundant carotenoid in leaves, has been extensively studied, while its degradation pathway during senescence is poorly understood. We found that a novel carotenoid derivative, lutein 3-acetate, accumulates in senescent leaves of rice (Oryza sativa L.). The change in contents of lutein and lutein 3-acetate suggests that lutein is converted to lutein 3...

one of the simplest methods for short-term handling and storage of fish is the refrigeration in combination with dip treatments. this study was conducted to determine the effect of pre-storage α-tocopherol acetate dipping treatments on lipid stability of refrigerated rainbow trout fillets. trout fillets were dipped in α-tocopherol acetate solutions (200 and 500 mg kg-1 flesh) and subsequently s...

• Volatile thiols are responsible for the characteristic aroma of Sauvignon Blanc. There are 4 main volatile thiols: 4-mercapto-4-methylpentan-2-one (4MMP): box tree, broom 3-mercaptohexyl acetate (3MHA): passion fruit 4-mercapto-4-methylpentan-2-ol (4MMPOH): citrus zest 3-mercaptohexan-1-ol (3MH): grapefruit A comparative study of Sauvignon Blancs from around the world showed that those from M...

The 3-keto derivatives of trehalose and sucrose respectively were prepared by a one-step enzymatic route using D-glucoside 3-dehydrogenase from Flavobacterium saccharophilum. Reductive amination of 3-ketotrehalose with ammonium acetate and sodium cyanoborohydride gave three compounds, 3-amino-3-deoxy-alpha-D-allopyranosyl alpha-D-glucopyranoside, 3-amino-3-deoxy-alpha-D-glucopyranosyl alpha-D-g...

The antioxidant capacity, total anthocyanins, total phenolics, volatile compounds, and postharvest quality of strawberry fruit were evaluated after treatment with natural antimicrobial compounds and during storage at 7.5 ◦C. Strawberries treated with methyl jasmonate (MJ) in conjunction with ethanol (MJ-ETOH) showed higher antioxidant capacity, total phenolics, and anthocyanins than those treat...

In the crystal structure of the ammonium carboxyl-ate-boric acid cocrystal, (C(3)H(7))(4)N(+)·CH(3)CO(2) (-)·H(3)BO(3), the boric acid forms two O-H⋯O hydrogen bonds to the acetate anion. The acetate-boric acid species is hydrogen bonded to another acetate-boric acid species through the third OH unit of the boric acid about a twofold rotation axis.

The title Mn(III) compound, {[Mn(C(18)H(18)N(2)O(4))(CH(3)COO)]·CH(3)OH}(n), was synthesized by a reaction between mangan-ese(II) acetate and ethyl-enebis(4-meth-oxy-salicylaldimine). The structure is made up of bis-(4-meth-oxy-salicyldene)ethyl-enediaminatomanganese(III) units bridged by acetate groups, with Mn-N = 1.9786 (9), Mn-O = 1.8784 (10) and Mn-O(acetate) = 2.056 (9) and 2.2571 (9) Å, ...

the composition of essential oil of leaves of the male and female shrubs of juniperus chinensis l. (growing in isfahan) was analyzed by gas choromatography(gc) and gc-mass spectrometery (ms). the main constituents of leaf oil of the male shrub were: bornyl acetate (26.1%), sabinene (18.3%), trans-sabinyl acetate (11.1%), myrcene (9.2%), limonene (6.1%), elemol (5.5%), α-cadinol (2.3%), δ-cadine...