Observation on the effect of modified buffy coat centrifugal canning method on improving the quality of platelet concentrates / 中国输血杂志

【Objective】 To evaluate the quality of platelet concentrates (PCs) prepared by traditional and modified buffy coat centrifugal canning methods, and to explore the effect of modified buffy coat centrifugal canning method on improving the quality of PCs. 【Methods】 The buffy coat centrifugal canning methods was divided into traditional group and modified group. In the traditional group, the buffy coat component bag and empty bag were directly combined layer by layer and vertically canned for light centrifugation. In the modified group, a foam spacer was added between the buffy coat component bag and the empty bag for light centrifugation layer by layer. The effects of the two groups of centrifugal canning methods on the preparation quality of PCs were observed. 【Results】 The platelet content in PCs prepared by the modified buffy coat centrifugal canning method was significantly higher than that in the traditional group, and the mixed amount of red blood cells was lower than that in the traditional group (P0.05), the qualified rates of platelet content and mixed red blood cell in the modified group were higher than those in the traditional group (P<0.05). 【Conclusion】 The modified centrifugal canning method with buffy coat can improve the quality of PCs, which is convenient and cheap, and is worth popularizing.

Caracterização sensorial de ovos de codorna submetidos a diferentes processos de conservação / Sensorial characterization of quail eggs submitted to different conservation processes

Objetivou-se avaliar a aceitação sensorial e a intenção de compra de três diferentes conservas de ovos de codorna. Foram avaliados três tratamentos/ formulações de conserva de ovos de codorna: Tratamento1 - (vinagre e sal); Tratamento 2 ­ Vinagre, sal e azeite; Tratamento 3 ­ Defumação. Foram realizados dois testes sensoriais das conservas armazenadas por sete e 28 dias, todas mantidas sob temperatura ambiente. Aplicou-se o teste de aceitabilidade e de intenção de compra para no mínimo 50 julgadores não treinados em cada teste, com avaliação dos atributos, cor, odor, sabor e aceitação global, por meio de uma escala hedônica estruturada mista de 9 pontos e julgamento da intenção de compra do produto com escala variando de 1- decididamente não compraria a 5 ­ decididamente compraria. Verificou- se diferença (p<0,05) em ambos os períodos para todos os atributos avaliados (cor, sabor, aroma e impressão global) e intenção de compra, com exceção do primeiro período (7 dias) em que não houve diferença (p>0,05) para o atributo cor. Os ovos de codornas submetidos à defumação obtiveram 73 e 92% da preferência dos provadores (notas de 6 a 9) e grande parte dos provadores (60 e 70%) alegaram que comprariam ovos de codorna defumados em conserva estocados por sete e 28 dias, respectivamente. O processo de defumação confere aos ovos de codorna alta aceitação sensorial, com excelentes índices de aprovação nos atributos avaliados, especialmente quando estocados por 28 dias.(AU)

It was aimed to evaluate the sensorial acceptance and purchase intention from three different canning quail eggs. It were evaluated three treatment / formulation of canning quail eggs: Treatment 1: vinegar and salt; Treatment 2: vinegar; Treatment 3: smoking. It were performed two sensory testing with the canning stored for 7 and 28 days, kept under ambient temperature. It was performed sensorial acceptance and purchase intention tests with at least 50 judging individuals without training, evaluating attributes, color, odor, taste and general acceptance, through a mixed structured hedonic scale of 9 points and purchase intention judging with a scale ranging from 1 ­ it would definitely buy and 5- it wouldn't definitely buy. There was difference (p<0,05> in both periods of time for all the evaluated attributes (color, taste, odor and general acceptance) and purchase intention, except for the first period of time (7 days) which there was not difference (p>0,05) for the color attribute. Smoked quail eggs obtained 73 and 92% preference of thejudging individuals (grade 6 to 9) and most of the individuals (60 and 70%) related that would purchase smoked quail eggs stored for 7 and 28 days, respectively. The smoking process conferred high sensorial acceptance to the quail eggs, with excellent approval rate of the evaluated attributes, mainlywhen stored for 28 days.

Industrial processing of canned beans / Revisão: processamento industrial do feijão tipo enlatado

ABSTRACT: Beans are popular as a protein-filled legume of high nutritional value, being one of the most planted species in the world. However, recent years have seen a decrease in the consumption of beans, owing to the time necessary to cook it domestically. Thus, it is being replaced in people’s diets by other foods. An alternative preparation that supplies modern consumers’ demands is industrially processed beans. This article aimed to provide a literature review on the processing of canned beans. Few recent studies have been performed in Brazil on this subject, as most studies have focused instead on the technological quality of dry bean grains processing. In this article industrial processing concepts and features, production unit operations, and canned beans quality standards will be discussed. These efforts are expected to contribute to the Brazilian beans production chain, and consequently to increase consumption of canned beans and the demand for industrial processing of beans in both the domestic market and future product exports.

RESUMO: O feijão destaca-se no cenário mundial como uma leguminosa rica em proteínas e com alto valor nutricional, sendo estando entre uma das espécies mais cultivadas em todo o mundo. Porém, observa-se diminuição do consumo deste alimento devido à demanda de tempo no seu preparo doméstico, sendo então substituído na dieta. Uma alternativa que atende as demandas do consumidor moderno é o processamento industrial. O objetivo deste trabalho é fornecer uma revisão de literatura abordando informações sobre o processamento tipo enlatado em feijão. Atualmente, no Brasil, são realizados poucos trabalhos dentro desta linha de pesquisa, visto que o maior enfoque é para a qualidade tecnológica dos grãos para o consumo tradicional, na forma seca. Neste material são apresentadas informações sobre alguns conceitos e detalhes do processamento industrial, das operações unitárias na produção e dos parâmetros de qualidade avaliados no feijão enlatado. Espera-se, contribuir com a cadeia produtiva do feijão brasileiro, aumentando o consumo e as demandas do processamento industrial, tanto em mercado interno quanto para futuras exportações do produto.

Causas dos defeitos em conservas enlatadas de sardinhas colhidas no comércio varejista de Niterói/Brasil / Causes of spoilage in canned of sardines collected from retail trade in Niterói -Brazil

Foram examinadas 600 latas de sardinhas no comércio varejista de Niterói e Rio de Janeiro. Nestas, observou-se que 20 (3.33%) apresentavam defeitos de recravação, tais como: vêes, bicos e franjas, sendo que 45% estavam amassadas e 76% estufadas. Na análise microbiológica foi constatado, em 19 latas cultura mista de microrganismos à microscopia de imersão. Na análise dos recipientes, estas mesmas latas apresentaram vazamentos através de furos ou defeitos de recravação. A causa mais provável da deterioração do conteúdo destas latas é a contaminação pós-processamento.

Six llundred cans of sardines collected from local stores in Niterói -Brazil, 20 cans (3.33%) had major container defects. Leaking seams at the manufacturer's end and droops and vees on the canner's end, presented swelled and crushed. Nineteen cans of sardines were submited to a. microbiological analysis and showed a mixed culture of microrganisms when observed under immersion. In the containers analysis, these same cans presented holes or cracks in their double seams, permitting fluid to leak in or out. The probable cause of the spoilage material presents inside the cans must be the post-processing contamination.