Poor handling results in bruising which translates into losses for the Philippine 'Carabao' mango fruit industry. This study determined bruise injury in 'Carabao' fruit as affected by harvest method, dropping from heights of up to 5 m, and interaction of ripeness stage [viz. mature green (MG), more yellow than green (MYG), and fully yellow (FY)] and dropping from 0.5 m up to 1.5 m. Mangoes harvested carefully or by the conventional method consistently had better visual quality at harvest and a lower degree of anthracnose and stem-end rot at the table ripe (TR) stage than those that were dropped. As the drop height increased, cracked fruit, weight loss, and bruised flesh also increased in terms of incidence and severity. There was a positive correlation between the kinetic energy at impact and bruised flesh (y = 2.63x + 20.52, R2 = 0.26, P = 0.02). Retention of green color on the bruised skin surface was evident on mangoes dropped at the MG stage. Subtending bruised flesh was characterized by a white mass of unhydrolyzed starch. Fruit dropped at the MYG stage had soft and opaque bruised flesh. Those dropped at the FY stage had transparent jelly-like bruised flesh beneath the impact site. This study on 'Carabao' mango fruit illustrates that the extent of damage appeared throughout the ripe stage, especially if the fruit does not sustain a crack when dropped. The serial symptomology could be gainfully used in quality assessments in the supply chain to help identify the maturity stages at which these damages occur. This also highlights the importance of avoiding physical damage at harvest and when the fruit progress through ripening.
Incorporation of manures into soil can add nutrients, improve soil structure and enhance biodiversity, thereby improving the sustainability of vegetable production systems. Unfortunately, manures can also potentially contain human enteric pathogens. To reduce the risk of contamination, Australian guidelines recommend a withholding period of 90 days between manure application and harvest for high-risk products such as leafy salad greens. Our study examined the appropriateness of these guidelines under conditions replicating those on a commercial vegetable farm. Cow manure and poultry litter with/without addition of non-pathogenic strains of Escherichia coli (E. coli), Listeriainnocua and Salmonella sv. sofia were added to sandy and clay loam soils typical of those used to grow vegetables. Bacterial populations were monitored in the soil and on crops of cos lettuce during spring (A), summer (B) and autumn (C) trials, with testing conducted by a commercial laboratory. Significant declines in E. coli occurred within 6 to 16 days in all trials. Modelling indicated that E. coli populations would be at or close to the limit of detection within 50 days for all of the combinations tested. A 2–3 log die-off of Salmonella spp. occurred within three weeks. However, occasional detections continued throughout trial A. As a result, the probability of detection after 50 days fell from 1.0 to 0.1 and 0.02 in trials B and C, respectively, but remained at 0.44 in trial A. Listeria spp. was the most persistent in soil but was not detected on lettuce at commercial maturity. While this study was limited in scope, the results suggest that a 90 day withholding period between application of manure and harvest significantly reduces risk from enteric pathogens under Australian field conditions.
This article reports on Connecting Museums: leadership, innovation and education in Science Museums, an international conference involving three university museums: Museu de Ciências e Tecnologia da Pontifícia Universidade Católica do Rio Grande do Sul (MCT-PUCRS), the Great North Museum: Hancock (GNM), at Newcastle University (NU), and the Oxford University Museum of Natural History (OUMNH). The partnership started with a project to develop a joint exhibition on the theme of evolution organised by MCT-PUCRS and GNM, supported by the British Council’s Newton Fund (Institutional Skills 2016). The two museums shared the project at the UK University Museums Group (UMG) conference in 2016, where it came to the attention of colleagues at OUMNH. Following the UMG conference, the leadership and education teams of the three museums opened a dialogue to exchange knowledge and experience on leadership, innovation and education in science museums. This culminated in the first Connecting Museums conference in Porto Alegre, Brazil in October 2017. The conference was attended by 81 professionals, researchers, undergraduate and graduate students with interests in museology, the natural sciences and related areas. *** Connecting Museums: um estudo de caso sobre liderança, inovação e educação em museus de ciências universitários liderando projetos de internacionalização ***Este artigo constitui-se de um relato sobre o Connecting Museums: liderança, inovação e educação em Museus de Ciências, uma conferência internacional envolvendo três museus universitários: o Museu de Ciências e Tecnologia da Pontifícia Universidade Católica do Rio Grande do Sul (MCT-PUCRS), o Great North Museum: Hancock (GNM), da Newcastle University (NU) e o Oxford University Museum of Natural History (OUMNH). A parceria entre as instituições iniciou-se a partir de um projeto para o desenvolvimento de uma exposição conjunta, organizada pelo MCT-PUCRS e pelo GNM financiada pelo Newton Fund por meio do edital Institutional Skills 2016 promovido pelo British Council. Os dois museus apresentaram o projeto na conferência do University Museum Group (UMG) em 2016 no Reino Unido, despertando a atenção de colegas do OUMNH. Após a conferência, as equipes de gestão e de educação dos três museus iniciaram um diálogo que culminou na troca de conhecimentos e experiências nas áreas de liderança, inovação e educação em museus de ciências. Este diálogo resultou na primeira edição da conferência Connecting Museums em Porto Alegre, Brasil, em outubro de 2017. Participaram do evento 81 profissionais, entre pesquisadores e alunos de graduação e pós-graduação, cujo interesse estava relacionado à museologia, ciências naturais e áreas correlatas.Palavras-chave: Museus de ciência. Liderança. Inovação. Educação em ciências. Internacionalização.
The sap or latex injury in mango reduces fruit quality as it causes skin blemish during harvesting and postharvest handling. Sap volume and visual quality of ‘Carabao’ mango as affected by different harvest times during the day (every hour from 7:00 AM to 5:00 PM), delay in cutting (hourly up to 6 h) of the pedicel at either the pedicel base or at the abscission zone and different desapping agents applied 1 or 7 h from harvest were assessed. Sap injury was assessed by allowing the sap to flow on the fruit after re-cutting the pedicel at the abscission zone. Sap volume was measured during harvesting while sap injury, days to table ripe stage, visual quality, weight loss, degree of anthracnose and stem end rot were assessed during fruit storage. The experiments were laid out using the completely randomized design. Sap volume ranged from 0.06 to 0.25 mL fruit-1. The lowest sap volume was recorded in fruit harvested in the afternoon between 1:00 and 5:00 PM, while the highest volume was noted at 7:00 and 10:00 AM. The relative humidity of the air was highest at 7:00 AM. Better quality at table ripe stage was noted in mango fruit harvested at 1:00 - 2:00 and 4:00 - 5:00 PM. Sap injury at different harvest times did not vary. The delay in the destemming up to 6 h and the location of cut or pedicel length did not affect sap volume and fruit quality. However, the cutting of the pedicel at the abscission zone rather than at the pedicel base tended to result in better quality, which helped delay fruit ripening. All desapping treatments, such as 1.0 % alum, 1.0 % detergent, 0.5 % lime [Ca(OH)2], and water, could control sap injury. Untreated fruit showed longer shelf life due to a lower degree of anthracnose. Stem-end rot did vary among desapping agents. Among the desapping treatments, water is found to reduce sap damage better. Harvesting later in the day, cutting at the abscission zone, and washing mangoes with water can reduce sap or latex damage in ‘Carabao’ mango.
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