http://www.locus.ufv.br/handle/123456789/67552026-02-042026-02-042015-06-11SILVA, Alessandra Eluan da. Jambu (Spilanthes oleracea Linn.) minimamente processado: compostos bioativos e caracterização físico-química, microbiológica e sensorial. 2015. 76 f. Tese (Doutorado em Ciência e Tecnologia de Alimentos) - Universidade Federal de Viçosa, Viçosa. 2015.https://portaldaposgraduacao.uepa.br/handle/riuepa/260AbertoJambuCompostos bioativosTestes microbiológicosAvaliação sensorialJambu - ProcessamentoTeseCiências Agrárias::Ciência e Tecnologia de Alimentos::Tecnologia de AlimentosJambu (Spilanthes oleracea) is a commonly consumed vegetable in typical dishes in northern Brazil. However, for consumption there is a whole preparation that takes time and manpower. Therefore, the minimally processed jambu provides convenience and practicality. This work aimed at evaluating the processing conditions of minimally processed jambu stored at 5 ° by checking C, its microbiological and physico-chemical characteristics, as well as its phytochemicals and sensory evaluation. The experiment was performed using jambu cultivated in Viçosa - MG, and the analyses were carried out using jambu branch containing stem, leaf and possible inflorescence. Initially this jambu was characterized by assessing its physical analysis (relative water content, instrumental color), centesimal composition, organic acids profile, acidity, pH, brix, phytochemical quantification (Vitamin C, chlorophyll a, chlorophyll b, carotenoids, phenols and flavonoids) and microbiological characterization (total coliforms and E.coli.; standard counting of mesophilic bacteria and Salmonella). Then the minimal processing was performed by testing sanitizers such as sodium hypochlorite, sodium dichloroisocyanurate dihydrate at concentrations of 100 and 200 mg/L; hydrogen peroxide at 3 and 6%, and a control using potable water. The effectiveness of sanitizers was verified through microbiological analysis, and the most promising in reducing microbial load was the one used in jambu processing stored at 5 °C. Every three days, the jambu was evaluated for microbiological and physico-chemical analyses as well as its phytochemicals. The sensory evaluation was performed by a descriptive sensory profile. In the results, the jambu presented hue angle of 178.77 indicating hues tending to green. The centesimal composition expressed in fresh matter presented 89.6 g/100 g moisture, 5.16 g/100 g carbohydrates, 1.99 g/100 g protein and 1.47 g/100 g total fiber, values similar to those found in the literature. The predominant organic acid is the oxalic acid which is also present in other vegetables. And among the phytochemicals, the ones with most significant concentrations were vitamin C (12.94 mg/100 g), phenols (151.48 mg EAG/100 g) and flavonoids (17.71 mg rutin/100 g). Microbiological results are within the recommended by law. In the assessment of sanitizers, the results indicated that the sodium dichloroisocyanurate dihydrate 200 mg/L was the most effective in reducing microbial load. In cold storage it was observed that there was an increase of psychotropic bacteria count, reaching 3.0 x 10 5 CFU/g on the 12th day of storage, whereas the other microbiological analyses were stable during the storage period. The effect of time was significant (p<0.05) for acidity, pH, weight loss, relative water content, leaf brightness and vitamin C. For the coordinates of instrumental color, a* and b*, the chroma (c*), hue angle to stem and leaf, chlorophyll a and b content, carotenoids, flavonoids and phenols did not have any significant influence of time (p>0.05). In sensory evaluation, a team of nine trained judges evaluated the jambu immediately after processing and after 4, 8 and 12 days of storage. Within ten attributes raised, color, firmness, sour taste, salty, bitter tastes and had numbness no significant influence of storage time (p>0.05), while for the odor, browning, surface moisture and overall appearance, the effect was significant (p<0.05). Thus, among the study conditions, microbiological, physical-chemical, bioactive compounds and sensory allowed to estimate in 8 days shelf life of minimally processed jambu and refrigerated.Outros