Bacterial spot caused by Xanthomonas arboricola pv. pruni (Xap) is considered as a major problem in peach orchards. Copper and antibiotics are used to control, and biocontrol should be a new alternative with low environment impact. The objective was evaluated by the antibiotic activity of the metabolite produced by Pseudomonas aeruginosa LV strain. The free cells supernatant was fractionated with a serial organic solvent with crescent polarity and a dichloromethane phase was concentrated and lyophilised, and after was fractionated using vacuum liquid chromatography. The antibiotic activity of the F3 fraction containing an organometallic compound was tested on Xap in vitro and in a greenhouse conditions. Plants were sprayed with F3 before or after Xap infection and the results showed changes in exopolysaccharides and cell morphology. The F3 concentration of 450 µg•mL-1 was more effective. The results showed that F3 fraction could be a new alternative to control bacterial spot.

Phytocosmetics are increasingly gaining attention from consumers who search for alternatives for the maintenance and protection of the skin. This article reports formulation of a phytocosmetic derived from defatted soybean flour, an emulsion base that is hydrolyzed from the glycinin protein (1000 µg/g). Test for stability, microbiological control and biological activities antimicrobial (agar diffusion method), antioxidant (method of ABTS/TEAC radicals) and anti-inflammatory (method of hyaluronidase enzyme) properties were conducted. The results indicated that the phytocosmetic was stable and had low indices of microorganisms, according to Resolution 481/99. The bioactivity of the glycinin peptides was not altered or harmed by the other components of the emulsion. For the antimicrobial activity, the bacteria E. coli, S. aureus and P. acnes had values of 30.5 mm, 28 mm and 25 mm halos, respectively. For the antioxidant activity, the result was of 25.1 TEAC and the anti-inflammatory activity was measured at 83.4% inhibition of hyaluronidase enzyme. This study showed that the formulated phytocosmetic has great potential for topical use; it is comparable to other anti-aging cosmetics for daily skin care with antioxidant, anti-inflammatory and antimicrobial properties.