Abstract The objective of this work was to formulate and to characterize chemically and physically different formulations of camu-camu jellies, with or without mixture of other fruits. Their sensory acceptance was evaluated by identifying the formulations with greater acceptability while maintaining their nutraceutical potential. The formulations were: camu-camu jelly, camu-camu jelly with jabuticaba, camu-camu jelly with guava, camu-camu jelly with acerola, camu-camu jelly with passion fruit and camu-camu jelly with papaya. Untrained tasters were used to assess consumer acceptability. In a second scale the purchase intention was evaluated. The following variables were also analyzed: pH, soluble solids, titratable acidity, ratio (SS/TA), ascorbic acid, total anthocyanins and flavonoids, phenolic compounds and antioxidant activity by the DPPH and FRAP methods. The results showed that camu-camu jelly without mixtures was not well accepted in the sensory test when compared to the others. The greatest preference was for mixed jams of camu-camu with guava and jabuticaba, in which they obtained greater acceptance and purchase intention. Jellies with higher levels of bioactive compounds and antioxitant activity obtained low acceptance and purchase intention, perhaps due to their high astringency.

RESUMO Maconellicoccus hirsutus (Hemiptera, Pseudococcidae), praga de inúmeras espécies, especialmente frutíferas, está se expandindo no continente sul-americano. Informações sobre sua dinâmica, inimigos naturais e práticas culturais são importantes para seu manejo. Nosso objetivo foi estudar as flutuações da população em M. hirsutus e seus inimigos naturais em um pomar de ata (Annona squamosa) em Roraima, Brasil. As árvores foram avaliadas mensalmente ao longo de um período de 12 meses e as taxas de infestação por M. hirsutus e parasitismo foram estimadas. A maior infestação ocorreu em agosto de 2014 e entre fevereiro e março de 2015. Hospedeiros alternativos foram infestados durante a entressafra da ata. Bicho-lixeiro e o parasitoide Anagyrus kamali (Hymenoptera, Encyrtidae) foram os inimigos naturais mais importantes. O parasitismo médio por A. kamali nos frutos foi de 50%, com maiores taxas nos períodos de maior infestação por M. hirsutus. A poda de frutificação reduziu as populações de M. hirsutus.

ABSTRACT Maconellicoccus hirsutus (Hemiptera, Pseudococcidae), a species of economic interest, especially for fruit plants, is expanding on the South American continent. Information about the population dynamics of this pest associated with control by natural enemies and cultural practices is fundamental for its management. Our objective was to study the population fluctuations in M. hirsutus and its natural enemies in a sugar-apple (Annona squamosa) orchard in Roraima, northern Brazil. Trees were evaluated monthly over a 12-month period. Infestation rates by M. hirsutus and its parasitism were also estimated for potential host plants around the study area. Highest infestation occurred in August and February-March. Alternative hosts were infested during the off-season, mainly fruit. Lacewings and the parasitoid Anagyrus kamali (Hymenoptera, Encyrtidae) were abundant natural enemies. Average parasitism by A. kamali in fruits was 50%, with highest rates in periods of greatest infestation by M. hirsutus. Fruitification pruning reduced M. hirsutus populations.

Neste trabalho objetivou-se manter a qualidade e aumentar o tempo de prateleira durante a pós-colheita de bananas 'Prata-Anã' e se avaliou a eficiência do armazenamento refrigerado (AR) e da atmosfera modificada (AM) pelo uso de embalagens plásticas de polietileno de baixa densidade (PEBD), do vácuo e da utilização de sachê adsorvedor de etileno. Os tratamentos foram: T1: Controle (sem embalagem, sistema de adsorção de etileno e sem vácuo); T2: Embalagem de polietileno de baixa densidade (PEBD); T3: PEBD + adsorvedor de etileno; T4: PEBD + vácuo e T5: PEBD + adsorvedor de etileno + vácuo. As análises foram realizadas em intervalos de 5 dias após a colheita, até 35 dias de AR. Verificou-se que os frutos submetidos à embalagem de PEBD apresentaram as menores áreas de lesão na casca, as menores concentrações de etileno, os menores incrementos de acidez titulável (AT) e comportamento normal/manutenção dos valores de pH o que, possivelmente, proporcionou os maiores teores de açúcares totais e redutores ao final do período experimental; concluiu-se,então, que a combinação do uso da embalagem de PEBD com os sachês adsorvedores de etileno resultou no retardamento do processo de maturação dos frutos de banana 'Prata-Anã' proporcionando, comercialmente, a extensão da vida útil dos frutos em até 30 dias após a colheita.

In order to keep the quality and increase the shelf-life during the postharvest of bananas 'Prata-Anã', the efficiency of cold storage (CS), the modified atmosphere (MA) by the use of low density polyethylene (LDPE) plastics bags, vacuum and use of sachet adsorption of ethylene was evaluated. The treatments were: T1: control (no packaging, system of ethylene adsorption or vacuum), T2: LDPE; T3: LDPE + system of ethylene adsorption; T4: LDPE + vacuum and T5: LDPE + system of ethylene adsorption + vacuum. Analysis were performed every 5 days after harvest, up to 35 days. It was verified that the fruit under LDPE bags showed the smallest areas with skin lesions, the lowest ethylene concentration, the lowest increments of titratable acidity (TA) and normal behavior/maintenance of pH levels. This possibly resulted in the highest contents of total and reduced sugars at the end of the experiment. Thus, it was concluded that the combined use of LDPE bags with the ethylene adsorbents sachets resulted in delaying in the process of bananas 'Prata-Anã' ripening, resulting, commercially, in the extension of shelf-life of banana for at least 30 days after harvest.