Three new multiflorane-type triterpene esters, i.e. 7α-hydroxymultiflor-8-ene-3α,29-diol 3-acetate-29-benzoate (1), 7α-methoxymultiflor-8-ene-3α,29-diol 3,29-dibenzoate (2), and 7β-methoxymultiflor-8-ene-3α,29-diol 3,29-dibenzoate (3), were isolated from seeds of Cucurbita maxima, along with the known compound, multiflora-7,9(11)-diene-3α,29-diol 3,29-dibenzoate (4). Compound 1 exhibited melano...

Abstract Background: The fruit of pumpkin (Cucurbita maxima D.), one genus Cucurbita, family Cucurbitaceae, has antioxidant activity due to the content metabolites including amino acids, fatty alpha-tocopherol, beta-tocopherol, beta-carotene, beta-cryptoxanthin, and beta-sitosterol. carotenoids tocopherols in activity, reduces skin damage sun exposure, can slow down aging process. Objective: st...

Cucurbitaceae, Cucurbita maxima, Tracer Experiments, Potash Fusion, Sporopollenin The results of tracer experiments performed with anthers of Tulipa cv. Apeldoorn have already shown that a high level of incorporation into the sporopollenin fraction was achieved, when [14C]phenylalanine was applicated as a precursor. In order to investigate whether the substantial incorporation of [14C]phenylala...

La salinización de los medios cultivo en producciones intensivas como consecuencia del uso agua riego con alta conductividad eléctrica se ha incrementado condiciones protegidas. Una estrategia para mitigar el efecto las sales sobre cultivos es plantas injertadas un pie que tolere este estrés abiótico. El melón (Cucumis melo L.) usualmente injerta distintas especies género Cucumis o Cucurbita, h...

A protein proteinase inhibitor was purified from a seed extract of amaranth (Amaranthus hypochondriacus) by precipitation with (NH4)2SO4, gel-filtration chromatography, ion-exchange chromatography, and reverse-phase high-performance liquid chromatography. It is a 69-amino acid protein with a high content of valine, arginine, and glutamic acid, but lacking in methionine. The inhibitor has a rela...