Taninos hidrolisáveis em Bixa orellana L.

Lima, Ricardo Chaves; Moreno, Antonio Jeferson de Deus; Castro, Solange Fernanda Loureiro de; Gonçalves, José de Ribamar Santos; Olivera, A; Sasaki, J. M.; Freire, Paulo de Tarso Cavalcante

doi:10.1590/s0100-40422006000300019

Cited by 6 publications

(4 citation statements)

References 12 publications

(13 reference statements)

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“…The spectrum related to the Maytenus rigida powder in our extract revealed a molecular structure equivalent to hydrolyzable tannins. This structure was similar to that found by Lima et al 47 , where a strong band at ~3410 cm -1 related to O-H vibration was observed. The main vibrations related to the aromatic tannin rings (related to C=C) present in the extract were registered between ~ 1325 and 1680 cm -1 .…”

Section: Evaluation Of the Chemical Interaction Of The Biofilms Compo...supporting

confidence: 91%

Advanced Microtexture Evaluation of Dextran Biofilms Obtained from Low Cost Substrate Loaded with Maytenus rigida Extract

et al. 2021

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We have obtained kefir biofilms loaded with Maytenus rigida extract. The main goal was to evaluate the influence of the addition of the extract on the biofilms microtexture using stereometric and fractal parameters. Atomic force microscopy, Fourier transform infrared spectroscopy, and contact angle tecniques were used to evaluate the topography, chemical interation and wettability of the biofilms. Chemical evaluation showed that the extract interacts with the polymeric matrix of the biofilms, changing their structure. This behavior affected the surface energy because the wettability decreased when the Maytenus content increased. The surface morphology was also affected and suggested the prevalence of bacteria and yeast at lower and higher extract concentrations, respectively. The surface roughness increased according to the increase in the extract concentration. Texture parameters revealed that the biofilm with lowest concentration had deeper furrows than for higher concentration. Advanced fractal parameters revealed that topographic uniformity, percolation and texture homogeneity were more suitable for the biofilm with 0.25 g.L -1 of extract. These results indicate that this biofilm have promising 3D micromorphology for regenerative medicine application. Furthermore, the physics tools used revealed to be very useful for characterizing of the microtexture of polymeric-based biological materials.

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Section: Evaluation Of the Chemical Interaction Of The Biofilms Compo...supporting

confidence: 91%

Advanced Microtexture Evaluation of Dextran Biofilms Obtained from Low Cost Substrate Loaded with Maytenus rigida Extract

et al. 2021

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“…According to the literature, the antiinflammatory, antimicrobial and healing activities of plants are related to secondary metabolites: tannins and flavonoids (Ahmad & Beg, 2001;Giovanelli et al, 2000;Lima et al, 2006;Perchellet et al, 1996;Robbers et al, 1997). So, since our results indicate that the tannins are present but the flavanoids are absent in the extract of Musa sapientum L., Musaceae, epicarp, it is probable that the biological activity of the CMS gel found in the present study is related to tannins and not to flavonoids.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of post-surgical healing in rats using a topical preparation based on extract of Musa sapientum L., Musaceae, epicarp

Lino¹,

Corrêa²,

Archondo³

et al. 2011

Rev. bras. farmacogn.

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Abstract:Considering that oral preparations made with peel green bananas (e.g. flour and extracts) demonstrated healing effects on mucous membranes and skin, this study evaluated the healing and the antimicrobial property of a topical preparation based on extract of Musa sapientum L., Musaceae, (apple banana) in surgically induced wounds in the skin of male Wistar rats, 100 g. The extract was obtained by decoction, the presence of tannins was detected by phytochemical screening and 10% of the extract was incorporated into the carbopol gel (CMS gel). The processes of healing and bacterial isolation were evaluated in the following experimental groups: control (no treatment), treatment with placebo or with the CMS gel. The healing of surgical wounds treated with the CMS gel was faster when compared with the control and placebo groups and the treatment with CMS gel also inhibited the growth of pyogenic bacteria and enterobacteria in the wounds. The results indicate that the extract of Musa sapientum epicarp has healing and antimicrobial properties (in vivo), probably, due to tannins.

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“…Lima et al . () reported the presence of substances with anti‐inflammatory activity in the B . orellana seeds.…”

Section: Introductionmentioning

confidence: 99%

Effects of environmental conditions on characteristics of annatto seed by-product

Demczuk

Ribani

2012

Quality Assurance and Safety of Crops & Foods

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Introduction The processing of annatto seeds yields a low-cost by-product known as annatto seed by-product. Due to its remarkable bixin levels, which is a natural antioxidant, the annatto seed by-product could be used in animal feed supplementation. As a low-moisture product, it is important to know information about hygroscopic behavior, changes during storage, package selection and drying equipment design. Objectives The annatto seed by-product's hygroscopic behavior was studied at 25°C and 35°C by using saturated salt solutions and the static method. Methods During storage with different relative air humidity, the annatto seed by-product's isosteric heat of sorption, bixin content and instrumental color parameters were evaluated. Results The isotherms exhibited type III behavior and the Kühn model properly fitted the annatto seed by-product's equilibrium moisture data. Above 75% air relative humidity, agglomeration, darkening and fungal development were observed. The isosteric heat of sorption decreased with an increase in moisture content. Conclusion Once the equilibrium was established, bixin losses (approximately 43% of the content) and color changes were more prominent at 35°C, especially under 68% relative humidity.

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Taninos hidrolisáveis em Bixa orellana L.

Cited by 6 publications

References 12 publications

Advanced Microtexture Evaluation of Dextran Biofilms Obtained from Low Cost Substrate Loaded with Maytenus rigida Extract

Advanced Microtexture Evaluation of Dextran Biofilms Obtained from Low Cost Substrate Loaded with Maytenus rigida Extract

Evaluation of post-surgical healing in rats using a topical preparation based on extract of Musa sapientum L., Musaceae, epicarp

Effects of environmental conditions on characteristics of annatto seed by-product

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