Pengaruh Plastik Pengemas Low Density Polyethylene (Ldpe), High Density Polyethylene (Hdpe)dan Polipropilen (Pp)terhadap Penundaan Kematangan Buah Tomat (Lycopersicon Esculentum.mill )

The increasing demand of tomatoes corresponds to the economic and population growth. To maintain the quality of tomatoes, an effort to holdup the tomato ripeness was done using several kinds of plastic packaging. This research was intended to assess the effects of using plastic packaging and the most effective kind of plastic packaging to extend tomato storage period. The research was done at BSFT Biology Laboratory Diponegoro University and Food Technology Laboratory Soegijapranata Catholic University. The design used in the research was Completely Randomized Design (CRD) with some treatments using different plastic packaging type (P 0 = control / without packaging, P1 = Low Density Polyethylene (LDPE), P2 = High Density Polyethylene (HDPE) and P3 = Polypropylene (PP), each treatment was repeated three times. The parameter observed was the percentage of weight loss, the change in color (using chromameter method); the hardness level (texture analyzer method) and total content of sugar. Data were analyzed by Analysis of Variance (ANOVA) then continued with Duncan's Multiple Range Test (DMRT) at the 95% significance level to find out the difference. The results show that the use of plastic as packaging materials is able to delay tomato ripeness and the effective type plastic-based packaging to weight loss and change color is HDPE and PP

Efektivitas Limbah Kulit Kering Nanas Madu (Ananas Comosus l.Merr) untuk Pembuatan Bioetanol dengan Proses Fermentasi dan Distilasi

Bioenergi adalah salah satu energi yang dapat diperbaruhi dan juga ramah lingkungan, salah satunya adalah bioetanol. Bahan baku yang mengandung glukosa, selulosa dan pati dapat digunakan menjadi bioetanol Nanas madu adalah tanaman yang dapat dimanfaatkan menjadi bioenergi. Penelitian ini bertujuan membuktikan efektivitas limbah kulit nanas madu kering untuk pembuatan bioetanol serta mengetahui kadar bioetanol yang dihasilkan. Proses fermentasi yang digunakan dalam peneltian ini . Kulit nanas madu yang sudah dikeringkan di proses hidrolisis, fermentasi dan distilasi. Proses fermentasi dengan variasi waktu fermentasi 1 hari, 2 hari, 3 hari, 4 hari, 5 hari, 6 hari, 7 hari,8 hari, 9 hari, 10 hari, 11 hari dan 12 hari. Hasil fermentasi tercepat akan didistilasi sebanyak dua kali dan dianalisa kadar bioetanol dengan GC-MS. Kadar bioetanol dari limbah kulit kering nanas madu didapatkan sebesar 95,66 % dengan waktu fermentasi selama 4 hari

The Growth of Botryococcus Braunii Microalgae as a Lipid Producer in a Mixed Medium of Coconut Water and Seawater

Energy needs in fuel sector tend to increase for supporting human life. Green microalgae (Chlorophyceae) can be used as an alternative solutions for bioenergy. Botryococcus braunii is lipid producer microalgae which can be processed further into biodiesel. Microalgae growth medium such as Walne can be substituted with coconut water that reducing economical cost. This research aims to determine the growth of B. braunii using coconut water and its effect on lipid production. The experiment conducted into five treatments of coconut water consist of P0 (0%), P1 (10%), P2 (7.5%), P3 (5%), and P4 (2.5%) for five days incubation and three repetitive step. Microalgae growth was calculated according to cell count using hemocytometer. The results showed that 2.5% coconut water substitution exhibited the best growth rate and lipid production, i.e. the amount of 547 cells / ml and produced lipid level according to these treatment increased 179% comparing with control

Isolation of Fungi From the Gastrointestinal Tract of Indigenous Chicken

Gastrointestinal tract of chicken is a place in which many kinds of fungi can be found. The aim ofthe research was to isolate fungi from the gastrointestinal tract of the indigenous chicken (AyamKampung). The chicken samples were four days, one week and two months old and were sampled fromchicken farm located in Yogyakarta. Potato dextrose agar (PDA) medium was used to grow the fungi.Fifty pure isolates of fungi were found from three different ages, those were four days, one week andtwo months old chicken were 5, 10 and 35 isolates respectively. The largest number of isolate was foundin ileum, then followed by caecum, jejenum and duodenum. The fifty isolate of fungi belonged to sevenspecies, those were Aspergillus fumigatus, Aspergillus Niger, Chrysonilia crassa, Mucor circinelloides,Mucor sp, Rhizopus oligosporus and Rhizopus oryzae

ISOLATION OF FUNGI FROM THE GASTROINTESTINAL TRACT OF INDIGENOUS CHICKEN

Gastrointestinal tract of chicken is a place in which many kinds of fungi can be found. The aim ofthe research was to isolate fungi from the gastrointestinal tract of the indigenous chicken (AyamKampung). The chicken samples were four days, one week and two months old and were sampled fromchicken farm located in Yogyakarta. Potato dextrose agar (PDA) medium was used to grow the fungi.Fifty pure isolates of fungi were found from three different ages, those were four days, one week andtwo months old chicken were 5, 10 and 35 isolates respectively. The largest number of isolate was foundin ileum, then followed by caecum, jejenum and duodenum. The fifty isolate of fungi belonged to sevenspecies, those were Aspergillus fumigatus, Aspergillus niger, Chrysonilia crassa, Mucor circinelloides,Mucor sp, Rhizopus oligosporus and Rhizopus oryzae

The Effect of Chrysonilia crassa Additive on Duodenal & Caecal Morphology, Bacterial & Fungal Number, and Productivity of Ayam Kampung

Fungi is a microorganism that can live in gastrointestinal tract of chicken. One type of fungi is multicellular or filamentous fungi. C.crassa is a species of filamentous fungi that has been isolated in the earlier study and it showed the best probiotic potency in vitro. The obyective of this research was to study the effect of addition of dried culture of C.crassa in feed on intestinal & caecal morphology, bacterial & fungal number, and productivity of indigenous chicken (ayam kampung). Research used completely randomized design with four treatments. The treatments were the level of dried culture in basal diet (0%, 0.25 %, 0.50 % and 0.75 %). Each treatment was replicated 5 times and each replicate consists of 10 chickens. The parameters observed were : villi morphology, number of bacteria and fungi in the duodenum and cecum of chickens aged 1, 21 and 35 days and productivity i.e. feed intake, final body weight and feed conversion. The results showed that 0.50% dried culture of C.crassa could increase the duodenal villi width, decreased the number of bacterial and fungal colonies in duodenum and caecum, but it did not increase productivity. The conclusion : C.crassa could stimulate the duodenal villi development and decreased the number of the bacteria and fungi in the gastrointestinal tract, yet it has no positive impact on the chicken productivity