Essential oils are the most important compounds produced during secondary metabolism in aromatic plants. Essential oils are volatile, have characteristic odor and are used as defensive agents by plants. In pepper, it is possible to say that essential oils are the “flavor fingerprint” of each species. In the present article, eight species of pepper were studied in order to extract their essential oils and oleoresins, test their antibacterial and antifungal activities and also to identify the compounds present in the most bioactive samples. Results demonstrated that two essential oils [Pimenta dioica (L.) Merr. and Schinus terebinthifolius] and three oleoresins (Schinus terebinthifolius and Piper nigrum white and black) recorded significant antimicrobial activity. These active essential oils and oleoresins are interesting for use in biotechnological processes employed in food, pharmaceutical and other industries.

Polysaccharides are a sustainable material for coatings and edible films, as they are nontoxic, widely available in nature and have selective permeability to CO2 and O2. In this work, a laboratory research on a quali/quantitative basis, sodium alginate films were developed, with and without post-film cross-linking, as well as chitosan films incorporating Z. officinale extract as an antimicrobial additive. Several properties such as solubility, moisture content, swelling, morphology and antimicrobial activity of prepared films were compared. The alginate films with crosslinking and incorporation of extract of Z. officinale showed the best characteristics to be used as medicated dressing, since it presents low solubility in water, higher swelling, and lower moisture content. In addition, the alginate film with crosslinking and incorporation of medium concentration of Z. officinale extract showed antimicrobial activity against Bacillus cereus.

O queijo Minas Frescal é um dos produtos mais comercializados no Brasil, e por possuir alta umidade é muito perecível. Para aumentar a vida útil dos alimentos, muitos extratos bioativos têm sido utilizados como conservantes, pois apresentam ação antimicrobiana. A casca e caroço de mangas são resíduos industriais que possuem compostos fenólicos com atividade antimicrobiana. Este estudo teve como objetivo o desenvolvimento de queijos Minas Frescal incorporando extratos de casca e caroço de manga, avaliar suas características físico-químicas e microbiológicas, bem como sua aceitação sensorial. A adição dos extratos não alterou as características físico-químicas do produto, exceto pelo pH que apresentou redução significativa e aumento da acidez titulável. Assim, conclui-se que, quanto menor o pH e maior o número de compostos fenólicos presentes no extrato, maior o efeito da atividade antimicrobiana. As médias atribuídas pelos participantes na análise sensorial indicaram preferência por queijos com extrato de manga Espada e Tommy Atkins, demonstrando o potencial de uso desses extratos na produção de queijo Minas Frescal.

The use of medicinal plants has grown over the years, this is due to the popular culture that already exists and to the increase in people's knowledge about the benefits of these plants. Dillenia indica popularly known as elephant apple or april flower is considered a medicinal plant that, according to studies, has antidepressant, antileukemic, anti-inflammatory, antioxidant, anti-diabetic, antihyperlipidemic, antimicrobial, cytotoxic and anxiolytic properties. This factor aroused interest in obtaining extracts of this to evaluate the antimicrobial action of these extracts. To obtain the extracts, separate samples of the leaves, bark and seeds were kept in contact with ethyl acetate for 3 days with daily agitation. After this period, the extract was filtered and dried by rotary evaporation. The analysis of the chemical composition of the extracts was performed by a Gas Chromatography coupled with Mass Spectrometry. The antimicrobial effect of the extracts was verified by the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The values of MBC and MIC of the extracts of leaves, bark and seeds against the microorganisms in question were 0.1% v/v. Employing chromatography it was possible to identify several organic acids in the three extracts of D. indica. These acids are probably the compounds responsible for the antibacterial activity shown by the studied extracts. I. INTRODUCTIONAccording to Maciel, Pinto and Veiga (2002), the popular culture of using medicinal plants and the efficiency of their use, that is, the beneficial effects that their use provides, collaborate in a significant way for the practice of consumption of medicines plants. As a result, this popular culture arouses the curiosity and interest of researchers in developing this natural resource for medicinal purposes. According to Jawla et al. (2009), medicinal plants have provided many clues to fighting diseases since the emergence of civilization.India is one of the 12 biodiversity centers in the world, with more than 45.000 different plant species (Jawla et al., 2009). There are many species of plants that have been used by tribal communities and in various regions of India, but their pharmacological and phyto-pharmacological importance are still unknown as these plants are rarely available. Among these plants there are several belonging to the family Dilleniaceae, which are not very well known, but have considerable medicinal value (Gandhi & Mehta, 2013). According to Bhagyasri et al. (2017), several studies report the potential of D. indica

Due to the growth of the cosmetics industry, developments and improvements are needed for the productive sector and its products to meet consumer demand and the quality standards imposed by inspection bodies. As a result, an area has developed to meet these needs that is known as phytocosmetics. This area involves the inclusion of constituents with of plant origin in the cosmetic product formulation. The objective of this work was to compare the formulations of lip moisturizers incorporating oleoresins and essential oils of cinnamon (Cinnamomun verum), in addition to testing the microbiological safety and the Accelerated and Extended Stability of the formulated products. The tests revealed that the proposed formulations are microbiologically stable and safe, which is due to the antimicrobial activity of the oleoresin and cinnamon essential oil used in the formulations.