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Model Prediksi Hasil Panen Berdasarkan Pengukuran Non-Destruktif Nilai Klorofil Tanaman Padi
Get PDFDeveloping yield prediction model was done to predict the production of rice crops based on chlorophyll value at different age levels. A model was developed by using spatial variability data of chlorophyll value. It was measured with a non-destructive method by using chlorophyll meter CCM-200 plus at different age levels in terms of days after planting 25, 40, 60 and 70 (DAP), and yield of rice. The objective of developing yield prediction model was to describe correlation between chlorophyll value and yield at different ages that had been obtained from 20 observation plots at the rice field. The study area was in Banda Langik, Sungai Bangek village, Lubuk Minturun of Koto Tangah sub district in Padang. Data were collected in two systems; grid sampling point and crop cutting test (CCT). Measuring of chlorophyll contained in leaf or number of SPAD (soil plant analysis development) was done by using chlorophyll meter CCM-200 plus. The research showed that chlorophyll value in rice crop correlated with yield. It was proved by correlation index obtained in each stage of age; 25 DAP (r = 0.945), 40 DAP (r = 0.887), 60 DAP (r= 0.835) and 70 DAP (r= 0.897). Rice yield could be predicted through following model: Y = -0.431513 + 0.045144 X1 + 0.03645 X2 + 0.01017 X3 + 0.020551 X4, where Y was the rice yield (kg/m2) and X was chlorophyll value at different age levels (X1=25 DAP), (X2=40 DAP), (X3=60 DAP) and (X4= 70 DAP). The model was produced through a multiple linear regression test based on chlorophyll value data and rice productivity during 1 period of harvest session
Risk Mitigation on Supply Chain of Rice: Case Study at Demak and Sleman Districts
Get PDFRice is a vital commodity in Indonesia because it is the main staple food for most Indonesian people. Balancing supply and demand of rice in Indonesia is complex and has possibly led to polemics, even though the production of rice in Indonesia tends to increase. An analysis of the supply-demand for rice commodity is, therefore, necessary as an effort to improve the national rice condition along with the logistics and supply chain point of view. This study aims to analyze the supply chain risk management of rice to provide recommendations on improving rice supply chain performance on each tier. This study was undertaken at Demak and Sleman Districts, Indonesia. In-depth interviews were used to enrich the information from the respondents along the supply chain. In this study, tiers on the supply chain of rice mainly consists of farmers, collectors who also acts as traders, and retailers. Meanwhile, the role of government is represented by The Indonesia Logistics Bureau (BULOG). The different supply chain pattern could be identified from the role of middleman in each province. This study uses ISO 31000:2009 standard for analyzing the risk in each tier along the supply chain. Based on the risk analysis, on-farm activity plays a vital role in transferring risk along the supply chain in terms of quality and quantity. Risk mitigation of each tier was explored in this study
Laju Deoksigenasi Dan Laju Reaerasi Sungai Bedadung Segmen Desa Gumelar Kabupaten Jember
Get PDFBedadung River is the main river in the Bedadung Watershed in Jember Regency. People use the river to fulfill their daily needs and agricultural irrigation. Organic pollutants from domestic wastewater and agriculture wastewater that enter in river can decrease dissolved oxygen concentration, which can influence the river’s water quality. The river has a self-purification system with a reaeration and deoxygenation mechanism. The purpose of this study was to analyze the rate of deoxygenation and reaeration using the Streeter-Phelps method. Deoxygenation and reaeration rates influence oxygen concentration. This research took water samples using a Grab Sampling technique as the primary data at 5 nodes and 4 segmentations. The results of the research showed that the deoxygenation rate was 0.036 mg/L.day and the reaeration rate was 0.046 mg/L.day. This meant that the deoxygenation rate was lower than the reaeration rate so the self-purification can run quite well. The average DO value was 7.62 mg/L, showed that the river according to the class III water quality standard, so, the water quality was good and save to be used by the public. The research result can be used to determine the water quality carrying capacity in the next research
Optimasi Kondisi Pengeringan Mie Singkong dengan Response Surface Methodology Terhadap Karakteristik Produknya
Get PDFWet cassava starch noodles have been developed in Srihardono Village, Pundong-Bantul District. The disadvantage of this noodle is the short shelf life. The objective of this study was to determine the optimum drying conditions to obtain the best quality of dried cassava noodles. The factors, such as temperature and drying time, and noodle layer were evaluated. Dried cassava noodles contain a combination of traditionally processed cassava starch and manufactured cassava starch. The ratio of traditional starch to manufactured starch was 3:2 (w/w). Drying was conducted using a cabinet drier at various temperatures (70, 80 and 90 °C) for 2 h, 2.5 h, 3 h, 3.5 h and 4 h. Noodle layers were 1, 2, 3 and 4. The observed quality parameters were elongation, water content, cooking loss and water absorption. The obtained data were analyzed using a Response Surface Methodology. The range of optimum drying condition was between 76 and 84 °C and drying time between 3.2 and 3.5 h. Noodles were arranged in 2 layers. Dried cassava noodles had an elongation value of 60 to 70%, water content of 8 to 9%, cooking loss of 10 to 12% and water absorption of 140 to 150%.
Pengembangan Produk Susu yang Mengandung Kalsium, Inulin, dan Teripang sebagai Susu Kaya Prebiotik dan Kolagen
Get PDFOne of the health problems that happens in elderly is osteoporosis. Its prevalence in Indonesia reached 19.7%. Nutrition is one of the important parts of osteoporosis treatment. Sufficient calcium intake impacts on high bone density. Many factors affect calcium absorption. Inulin is a prebiotic that helps increase calcium absorption. Bone composition is one of the important factors. Collagen is a bone component besides calcium and phosphate, which improves fracture resistance. The research aims to determine the organoleptic and physicochemical properties of a dairy product named "Kalipang". This research is an observational analytic study done in three stages. The first stage is a dairy product "Kalipang" formulation consisting of four formulas. The second is the organoleptic test of “Kalipang” including test against color, aroma, flavor, texture, and solubility and the last step is physicochemical properties test of products which covers the analysis of total sugar, reducing sugar, sucrose, protein, fat, water, ash, calcium, inulin, and pH. The result showed that from the aspect of flavor and overall, panelists prefer formula 2 than the other formulas. Based on the color, aroma, and texture, panelists prefer formula 4 than the others. Nutritional content test results showed that formula 1 has the highest level of total sugar, water, and inulin. Formula 2 has the highest level of reducing sugar, fat, and sucrose. Formula 4 has the highest level of protein, ash, and calcium. Formula 4 meets the organoleptic acceptance and has a better nutritional content than the others
Karakteristik Komponen Gizi, Antioksidan, dan Respon Organoleptik Bubur Jagung Tradisional Gorontalo dengan Ekstrak Daun Kersen (Muntingia calabura L.)
Get PDFTraditional food products are no longer attractive to the public, so it needs innovation to ensure that the products have a functional value. The aim of this research is to produce fortified cornmeal with kersen (Muntingia calabura L.) leaf extract which has high antioxidant activity and consumer demand of organoleptics. This research used a completely randomized design with single factor at 6 treatment levels, soaking grits of corn on cherry extract with 0%; 10%; 20%; 30%; 40%; and 50% concentrations. The results of nutrient analysis showed that protein contents ranged from 7.59% – 8.93%; fat 0.53%–0.96%; ash content 0.05%–0.12%; water content 11.6%–13.37%; and carbohydrate 77.24%–78.91%. The result of antioxidant activity showed that the higher concentration of kersen leaf extract added the higher also the antioxidant activity of fortified cornmeal, between 11.85–36.17%. Based on panelists’ organoleptic test, most gave neutral response to like slightly for color, texture, aroma and overall grits, while for the panelists, while for taste they gave dislike slightly response
Sensory Profiles and Lactic Acid Bacteria Density of Tape Ketan and Tape Singkong in Bogor
Get PDFTape ketan (fermented glutinous rice) and tape singkong (fermented cassava) are traditional Indonesian foods produced by fermenting carbohydrate sources using ragi as starter culture. Those products known to contain high number of lactic acid bacteria (LAB). The purpose of the study was to evaluate the sensory characteristics of tape ketan and tape singkong from different household industry in Bogor, to identify the sensory profile, and to evaluate the correlation between LAB density and sensory attribute. The research was started by survey to household tape industries, followed by sensory analysis of rating hedonic and Quantitative Descriptive Analysis (QDA), and LAB analysis. Data analysis of rating hedonic was done by ANOVA and post-hoc Duncan test, while data analysis of QDA was done by Principle Component Analysis (PCA). Samples of tape ketan were taken from two different home industries (BK and LK), while samples of tape singkong were taken from four different home industries (CT, NG, SH, TS). Hedonic rating test showed that the most preferred sample overall was tape ketan BK and tape singkong CT. QDA results showed that tape ketan BK was characterized by its sweetness, rice-like aroma, rice-like taste, and texture, while tape ketan LK was characterized by alcoholic aroma, alcoholic taste, sourness, and color. Tape singkong NG were characterized by sour aroma, alcoholic aroma, alcoholic taste, and color. Specific characteristic of tape singkong CT was bitterness and bitter aftertaste, SH was sweetness, and TS was texture. LAB of tape ketan BK (8,5 log cfu/g) was higher than LK (7,9 log cfu/g). Tape singkong with highest density of LAB was TS (8,1 log cfu/g), followed by CT (7,2 log cfu/g), NG (7,0 log cfu/g), and SH (6,5 log cfu/g). There was no correlation between the density of LAB and descriptive score of sourness, alcoholic taste, and sweetness
Efek Pemanasan Skala Rumah Tangga terhadap Komponen Bioaktif Daun Kenikir (Cosmos caudatus)
Get PDFKenikir leaves (Cosmos caudatus) are one type of vegetable that is commonly consumed in Indonesia both in fresh or cooked forms. The research was aimed to investigate the effect of household scale heating (boiling, steaming, or microwave heating) on the total phenolic content (TPC), antioxidant activity, and bioactive components of kenikir leaves. The research was divided into several stages such as sample preparation, household scale processing method, extraction, TPC analysis by folin-ciocalteu method, antioxidant activity analysis by DPPH method, and bioactive components analysis (caffeic acid and ferulic acid) by a reversed-phase ultra-high-performance liquid chromatography. The TPC of fresh kenikir leaves extract was 148.29–262.36 mg/100 g WB. Boiling or microwave heating for 3 minutes significantly decreased (p<0.05) TPC and antioxidant activity of kenikir leaves, as well as caffeic acid and ferulic acid contents. The steaming or microwave heating for one minute didn’t show significant differences in TPC and antioxidant activity when compared to fresh kenikir leaves. Furthermore, the steaming or microwave heating for one minute could maintain caffeine acid and ferulic acid contents of kenikir leaves. The correlation analysis showed that there was a positive correlation between TPC and antioxidant activity of kenikir leaves (r = 0.904)
Pendekatan Perolehan Lahan sebagai Alternatif Mitigasi Banjir Surakarta
Get PDFSurakarta City has experienced various losses due to flooding. Kali Pepe Catchment contributes to flooding that occurs in Surakarta City, mainly by upstream areas dominated by agricultural activities. Land acquisition in the upstream area of Kali Pepe Catchment for reforestation can reduce the river discharge into the downstream region of Surakarta City. This study aimed at 1) making delineation of land acquisition areas, 2) determining the amount of fair replacement value, 3) calculating the amount of river discharge reduction. Analysis of land capability using a geographic information system was used to determine the reforestation area. The fair replacement value was calculated based on the Indonesian Assessment Standard 306, by involving the physical replacement component and non-physical replacement. The amount of river discharge reduction of the Kali Pepe Catchment was calculated using a rational discharge model. The results showed that the delineation of 1.269,67 ha, which is the target of land acquisition in the upstream of the Kali Pepe Catchment, requires a replacement value of IDR 909 billion. This treatment reduced the river discharge by 139.263 lt/sec or 29.4%. River discharge reduction can be a solution in overcoming flooding problems in the downstream region of the Kali Pepe Catchment, Surakarta City