Judul: Analisis Kekuatan Gel (Gel Strength) Produk Permen Jelly dari Gelatin Kulit Ikan Cucut (Chiloscyllium punctatum) dengan Penambahan Karaginan dan Rumput Laut (Euchema spinosum)
Abstrak: Jelly candy is a chewy textured candy with added components such as hydrocolloid, gum, pectin, starch, gelatin, carageenan and others that are used to modify the chewy texture. The purpose of this research is to determine the gel strength and the best formulation of jelly candy produced from shark skin gelatin. The result showed that the best concentration of acetic acid in making gelatine was 0.1 N and the best formulation of jelly candy was 1.75% gelatine added with 3.50% carageenan. The gel strength of the product was 169.35 N/cm2. Higher value of gel strength showed more chewiness and elasticity of the produced jelly candy.
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Judul: Pembuatan Permen Jelly dari Karagenan dan Konjak dengan Aplikasi Prebiotik Xilo-Oligosakarida
Abstrak: The functional food’s consumption is growing rapidly. One of the functional ingredients is Xilo-oligosaccharides (XOS). In this study XOS was added to jelly candy which used carrageenan and konjac as gelling agent. Carrageenan and konjac was used as alternative gelatin substitute. The objective of this research is to study the influence of gelling agent (carrageenan, konjac, mixture of carrageenan and konjac), ratio of carragenan and konjac (1:1, 2:1, 3:1) and concentration of xilooligosaccharide used (3%,4%, 5%) to the physical and sensory characteristics of jelly candy. This research is divided in two steps, preliminary and main research. Preliminary research consists of formulation and selection of the best formula for the main research. The best formula is formula with 1.5% gelling agent, 20% sugar, 5% glucose, 0.2% citric acid, 0.1% flavor, 0.001% colorant, 73.2% water and sugar coating. Main research consists of texture, sensory, proximate, and XOS content analysis. The optimum jelly candy from texture and sensory analysis is jelly candy with mixture of carrageenan and konjac (1:1) and 5% XOS. The jelly candy has the hardness of 166.28 gf, elasticity 1.00, and stickiness 132.95 gf. The result of proximate analysis showed that jelly candy has 10.37% water content, 0.35% ash content, 1.00% fat content, 0.96% protein content, and 87.32% carbohydrates content (by difference). The XOS anlalysis show that the jelly candy contain 15.17% XOS.
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Judul: Habitat characteristics of timor friarbird philemon inornatus in Camplong Landscape Kupang District, East Nusa Tenggara
Abstrak: Timor Friarbird (Philemon inornatus, G. R. Gray, 1846) is one of the six endemic birds of Timor and is a protected species. The population of bird is suspected to have been decreasing over the past six years along with the decreasing of the quantity and quality of physical and biotic factors of its habitat. Knowledge on landscape spatial pattern could be used to evaluate the quantity and quality of habitat. This research aimed at identifying spatial habitat characteristics of Timor Friarbird based on dominant factors of physical and biotic habitat components. Principle Component Analysis (PCA) on the physical habitat factors showed that variables that have strong correlation with the presence of the bird were Normalized Difference Vegetation Index (NDVI), slope, distance from secondary forest, distance from bush, distance from cashew plantation, distance from crop plantation, and distance from roads. The biotic factors that have strong correlation with the presence of Timor Friarbird were the total number of plant species, number of plants used for food and cover, and mean height of trees. Height of poles was the only variable that has no correlation with the presence of Timor Friarbird. The most dominant physical and biotic factors that influent the presence of Timor Friarbird at a site are the density of foraging trees, slope, distance from the river, the distance from secondary forest, the density of cover pole and the distance from road. The estimation population of Timor Friarbird in Camplong region is low; this might be caused by low feeding tree density, high rates of poaching, the uneven distribution of feed vegetation and the flowering season, habitat degradation due to illegal logging, grazing cattle in the wild, and invasion of siam weed or chromolaena (Chromolaena odorata). The results of land cover classification at Camplong region based on Landsat_5 Thematic Mapper (TM) image with ArcGIS 9.3 and Erdas 9.1 obtained 11 land cover classes, with shrub as the dominant class. Keyword: Philemon inornatus, Habitat Spatial Characteristics, PCA, Population, Land Cover
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