Obtaining a novel mucilage from mutamba seeds exploring different high : intensity ultrasound process conditions

We evaluated the effect of ultrasonic power (200-600 W) and process time (1-7 min) on the recovery of a novel polysaccharide from mutamba (Guazuma ulmifolia Lam.) seeds applying high-intensity ultrasound. Ultrasound process conditions intensification gradually was removing the mucilage layer around the hydrated seeds. Then, the scanning electron micrographs showed that the mucilage was removed completely at the highest applied energy density (10,080 J/mL). Although the colour of mutamba seed mucilage (MSM) have been changed due to increase of energy density, it not affects its practical use because the MSM can be purified to remove impurities. The results obtained in this study demonstrated that the ultrasound process conditions intensification did not affect the primary structure of MSM according to zeta-potential, FTIR spectrum, and monosaccharide residues data. In conclusion, ultrasound process conditions intensification allows the full recovery of the MSM at a short process time (7 min) without altering its quality and the primary structure55332340CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP302423/2015-023038.000795/2018-612015/50333-1; 2015/22226-

Phytochemicals and biological activities of mutamba (Guazuma ulmifolia Lain.) : a review

Guazuma ulmifolia Lam. (Malvaceae), popularly known as mutamba and guacimo, is a tree found in the Latina America, especially in Brazil and Mexico. Mutamba tree has been used as traditional medicine to treat several pathological conditions, such as diarrhoea, coughs, and gastrointestinal and cardiovascular disorders. Phytochemical studies on this plant have resulted in the discovery of secondary metabolites that have shown bioactivities, including antimicrobial, antiprotozoal, antioxidant, and antidiarrheal activities, and cardioprotective effect. The traditional uses of G. ulmifolia have been experimentally proved by in vitro and in vivo studies, in which its bioactivities were associated to its phytochemical composition, mainly proanthocyanidins dimer B and trimer C (condensed tannins). The current review assesses and summarizes the progress about the phytochemical and healthy properties of G. ulmifolia published until 2019. This review intends to present the current knowledge and perspectives about G. ulmifolia and its potential use as food and therapeutic plant126COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP23038.000795/2018-612015/50333-

Mutamba seed mucilage as a novel emulsifier : stabilization mechanisms, kinetic stability and volatile compounds retention

We studied the use of a novel polysaccharide obtained from mutamba (Guazuma ulmifolia Lam.) seeds as an emulsifying agent. Orange peel oil-in-water emulsions stabilized by mutamba seed mucilage (MSM), gum acacia, and modified starches were produced by high-intensity ultrasound. The structural feature and interfacial tension data demonstrated the MSM has emulsifying property. MSM was able to stabilize an oil-in-water emulsion and retained effectively the volatile compounds from orange peel oil. Furthermore, the emulsion stabilized by MSM decreased the loss of limonene, myrcene, alpha-pinene, and linalool during the storage. MSM was able to increase the continuous phase viscosity, which improved the emulsion stability and delayed the volatile compounds release by decreasing the oil droplet motion. Additionally, the ability of MSM to adsorb rapidly into the oil-water interface aided to stabilize the emulsion. The emulsion stabilized by MSM showed better stability and control release than emulsions stabilized by gum acacia and modified starches. In conclusion, the MSM can be used as a natural emulsifying and thickening agent to prepare stable emulsions with high encapsulation efficiency of volatile compounds97CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP302423/2015-023038.000795/2018-612015/22226-6, 2015/50333-

Enzymatic treatment improves the antioxidant and antiproliferative activities of adenanthera pavonina l. seeds

We evaluated the effect of enzymatic treatment by amylase, cellulase and protease on antioxidant and antiproliferative activities of Adenanthera pavonina L. seeds. The effect was evaluated by using an experimental mixture design. The results showed that the antioxidant activity of the seeds increased after the enzymatic treatment. The enzymatic treatment using protease and cellulase (1:1, v/v) showed the highest values of antioxidant activity due to the increase of phenolic compounds content, mainly phenolic acids. The antiproliferative activity of the extract obtained by optimum enzymatic treatment was evaluated. We found the antiproliferative activity against the tumour lineage of prostate (PC-3) and kidney (786-0) was improved after enzymatic treatment. This work provides information that may be useful in handling of functional foods and/or drugs, since the functional properties of seeds such as antioxidant and antitumor activities were improved by enzymatic treatment with protease and cellulase18CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPsem informação2015/50333-1Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES)CAPES [001]; FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2015/50333-1]; CAPES-PROEXCAPES [23038.000795/2018-61