En esta investigación se obtuvo la enzima papaína a partir de látex tres especies del género Vasconcellea, V. chachapoyensis, heilbornii y pubescens, nativas región Amazonas en Perú. El extraído acondiciono con buffer acetato sodio, EDTA solución bisulfito sodio. La purificación realizó adaptando el método Andrade (2011), utilizó sulfato amonio para precipitación; etanol 96° dos etapas dilución...

A systematic study was conducted on P. pubescens by analyzing thermal characteristics of its rhizome and culm (1.5 m) at different ages, using various analyses such as X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetry (TG). For both the rhizome and culm of P. pubescens, the relative crystallinity (Cr) of cellulose increased and then appreciably decreased wit...

Flow cytometric measurements of nuclear DNA content were performed using ethidium bromide as the DNA stain (internal standard, Hordeum vulgare 'Ditta', 1C = 5.063 pg) in 25 samples belonging to nine diploid species and four varieties of Capsicum: C. chacoense, C. parvifolium, C. frutescens, C. chinense, C. annuum var. annuum, C. baccatum var. baccatum, C. baccatum var. pendulum, C. baccatum var...

The biophysical environment is an important determinant of land degradation in both commercial and communal land tenure systems in South Africa. According to a recent study on the status of land degradation, approximately 25% of the total land cover in South Africa is degraded. Several technologies exist to restore the soil and vegetation degraded areas in natural pastures. To improve the produ...

A new natural coumarin, angepubebisin (1), and a new furan, angepubefurin (2), together with the five known compounds, umbelliferone, angelol B (3), ulopterol (4), peucedanol (5), and scopoletin, were isolated from the roots of Angelica pubescens Maxim. f. biserrata Shan et Yuan. The structures of angepubebisin (1) and known compounds were determined by spectroscopic methods, including IR, UV, ...

Lectotypes are designated for four species epithets, including one second-step lectotypification, under the family Gesneriaceae Rich. & Juss., viz., Cyananthus umbrosa Griff., Didymocarpus griffithii Wight, Lysionotus pubescens C.B.Clarke and Petrocosmea parryorum C.E.C.Fisch., along with detailed notes on their typification.

Pterodon (Fabaceae) species known as “sucupira-branca” are traditionally used in Brazilian medicine. This South American monophyletic genus has delimitation problems. To separate the recognized we described wood anatomy of P. abruptus, emarginatus, pubescens, hybrid (between emarginatus and pubescens) apparicioi, latter two for first time. Wood anatomical studies were undertaken, qualitative qu...

background: thymus is a widely used medicinal plant in food and pharmaceutical industries. among different species of thymus, t. vulgaris is used more than other species in therapeutic dosage forms. objective: this study was conducted to differentiate various thymus species by tlc fingerprint. methods: in order to identify and differentiate various species of thymus, tlc fingerprints of essenti...

A revision of Gonolobus s.s. (Apocynaceae: Asclepiadoideae: Gonolobinae) in the West Indies is provided based on recent evidence of support for the monophyly of the genus from molecular and morphological data. Ten species are recognized (eight endemic to a single island each). Keys, descriptions, and illustrations are provided for all ten species. The conservation status of each species is prov...

Two novel chitin-binding peptides, designated Pp-AMP 1 and Pp-AMP 2, which had antimicrobial activity against pathogenic bacteria and fungi, were purified from Japanese bamboo shoots (Phyllostachys pubescens) by a simple procedure based on chitin affinity chromatography. They had the common structural features of the plant defensin family, but they could not be grouped in any type of that famil...