Judul: Application of starch-based plastics (bioplastics) as packaging material for horticultural products (tomato and bell pepper)
Abstrak: One of the post-harvest handling for minimize the losses of horticultural product was regulating the storage temperature and packaging technique. The objective of this research was to determine the cold storage’s characteristic of agricultural product from the climacteric products (tomato) and non-climacteric products (bell pepper) that were packed by the fruit bag packaging from bioplastic compared with the HDPE. The packed product stored on three levels of storage temperature (5, 10 and 15oC) for 21 days and every three days the product was for respiration rate, weight losses, hardness, the changing of fruit color, total soluble solids and vitamin C content. The result of the research showed that bioplastic packaging could delay the climacteric phase of tomato until the 21st day of storage, longer than packed by the HDPE. However the bell pepper packed by the bio-plastic started the senescence phase since the 12th days of storage, faster than packed by HDPE. Bio-plastic packaging was un-appropriate for low temperature (5-10 oC) storage. Tomato and bell pepper packed by the bio-plastic were giving better color change and hardness during the storage temperature of 15 oC. Based on the ratio changing a*/b*, the tomato shelf life stored on the temperature of 15 oC with using the bio-plastic (29 days) was longer than using HDPE (25 days). The bell pepper with using the bio-plastic had lower shelf life than bell pepper using HDPE on all temperature levels.
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Judul: Kajian Teknik Pengemasan Buah Pepaya Dan Semangka Terolah Minimal Selama Penyimpanan Dingin
Abstrak: Papaya and Watermelon are one of the famous agriculture commodity. As a agriculture products, they are perishables. This is because papaya and watermelon are still doing metabolitic activity (respiration). The effect of papaya and watermelon respiration is chemical changing so that caused physical changing. The physical changing as a result of chemical changing could be perceived directly as a color, aroma, texture and flavour changing. People generally prefer to consumed them in cold condition. Before they are ready to consume, papaya and watermelon are processed minimally, including fruits cleaning, paring, and cutting into a smaller size so that make them more interesting and easier to consume. They also has a big size so they havenot finished consumed in once time. So, usually people cut them several time during consumption. Minimally processed cause injury in the fruits so that make it shorter in storage life. The way that we can do to prolong the storage life of the minimally processed of papaya and watermelon is a proper packaging and cold storage. The aim of the research is to get characteristic of packaging, physical, chemical, microbiology’s characteristic of fruits, and quality parameter changing and organoleptic assesment for cold storage according to the technique packaging. It also determine the suitable packaging for the fruits during cold storage. Storage were conducted at five treatment that is using polypropylene packaging with two opened circulation holes (B1), polypropylene packaging with one opened circulation hole (B2), polypropylene packaging with two closed circulation holes (B3), plate with cling film plastic cover (B4), plate with no cover (B5) and conducted in the chiller refrigator with 5 - 100C temperature. The parameter which were tested are proximate test (including water content, ash content, protein content, faty content and fiber content) and quality analysis including physical parameter (texture and color), chemical parameter (water content, total acid content, pH, total sugar content, Aw, vitamin C), microbiological test (TPC) and organoleptic test. The parameter were tested during 14 days storage. The result of research showed that thickness, gramature and density of polypropylene packaging is higher and transmission rate (O2, CO2, H2O) is lower than cling film plastic packaging. Characteristic of papaya and watermelon showed that both of them had a relatively high water content (> 80%), watermelon’s texture was lower than papaya’s, neutral’s pH (6.10 for papaya and 5.60 for watermelon), papaya and watermelon’s Aw were 0.82 dan 0.80. They also has a relatively low carbohydrates, protein, and fat. The result also showed that during storage was occurred the increasing microbiological test (TPC). It cause the increasing of water content (except in B5), decreasing of total sugar content, increasing of total acid and decreasing of pH, increasing of color brightness (except in B5), and 0Hue (except in B5 of watermelon) and also increasing of texture content. Organoleptic test showed that fruits that in plate with no cover (B5) had the highest decreasing than the other. Panelists still like the fruits that packed in all of polypropylene packaging (B1, B2, B3) until nine to twelve days, fruits in plate with cling film cover (B4) until eight
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Judul: Peranan nyamuk sebagai vektor Dirofilaria immitis pada anjing
Abstrak: Dirofilaria immitis adalah cacing jantung yang hidup dalam ventrikel kanan dan arteri pulmonalis dari anjing; namun secara alamiah cacing ini dapat ditularkan kepada kucing, rubah dan karnivora yang lain. Cacing ini termasuk kelas Nematoda, famili Filariidae dan genus Dirofilaria, dengan bentuk tubuh langsing, berwarna putih dan daur hidupnya tidak langsung. Penyebarannya meliputi daerah beriklim sedang dan tropis seperti Timur Jauh, Pasifik, Afrika Utara dan Tengah, Australia serta Amerika Utara dan Selatan. Di Indonesia cacing ini jarang ditemukan. Nyamuk dari genus Anopheles, Culex, Aedes dan Mansonia merupakan vektor yang utama dari cacing jantung ini. Beberapa jenis pinjal seperti Ctenocephalides atau Pulex ternyata juga mampu menjadi vektor, meskipun kejadiannya jarang ditemukan. ...
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