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This research was carried out using a qualitative method through a direct survey conducted in Tangga Batu Village. The main goal of this study is to utilize corn cob waste into an alternative fuel product in the form of briquettes that is more environmentally friendly. Corn cobs are one of the abundant agricultural wastes, but they are often not used optimally. Through simple innovations, this waste can be processed into alternative energy sources that have economic value while having added value for the surrounding community. The process of making briquettes begins with the preparation of equipment which includes a kiln, mold, drying container, mash tool, strainer, and scale. The main ingredient is corn cobs that are first dried in the sun for 3–4 days to reduce the moisture content by 10–20%. Additional materials used are tapioca flour as an adhesive, small amounts of diesel, and water. The next stage is to compose the corn cobs in the burning pit for 20–30 minutes until they become charcoal. The charcoal is then scraped using a simple tool and sifted to separate the fine and rough parts. The fine charcoal is mixed with a starch adhesive from tapioca flour, then molded using a simple mold and compacted through a pressing process to produce good quality briquettes. Next, the briquettes are dried in the sun for 2-3 days until they are completely dry and ready to be used as fuel instead of wood or kerosene. The results of the study show that corn cob waste has great potential to be used as an alternative fuel. In addition to being environmentally friendly, these products also contribute to reducing dependence on fossil fuels.

Solid waste from the tapioca processing industry, which is based on cassava (Manihot esculenta), is a medium rich in organic matter, particularly starch, that supports the growth of various types of microorganisms, especially fungi and bacteria. This study aims to isolate and observe the morphology of microorganisms from solid waste of cassava from the tapioca industry using Potato Dextrose Agar (PDA) medium in a series of pharmaceutical microbiology practicum. Waste samples were taken from the tapioca processing site, then underwent a serial dilution process and inoculation into PDA medium, which was incubated at 28–30°C for 5 days. The isolation results showed the growth of microorganisms with diverse colony morphologies, which are suspected to originate from the genera Aspergillus, Penicillium, and Rhizopus, based on macroscopic and microscopic characteristics. The presence of these microorganisms indicates the potential utilization of cassava waste as a source of microbial isolates for biotechnological and pharmaceutical applications, such as enzyme production and development of bioactive compounds. This practicum activity also contributes to increasing students' understanding of isolation techniques, microorganism characterization, and their role in biological-based waste management.

This study aimed to evaluate the nutritional value of fish brain-brain products using milkfish surimi (Chanos chanos.Forskal) as the base ingredient, with variations in fillers such as tapioca flour, egg white, and Eucheuma cottonii seaweed.  Three formulations were used: (F1) surimi + tapioca starch, (F2) surimi + egg white, and (F3) surimi + Euchema cottonii seaweed. Proximate analyses were conducted to determine the moisture, protein, fat, ash, and carbohydrate content. The results showed that the addition of various fillers had a significant effect (P>0.05) on the value of protein, carbohydrate and water in the brain. While for fat and ash content, there was no significant effect (P<0.05). The average water content ranged from 66.5% to 72%, with the lowest content in the brain-brain added with tapioca flour. The highest protein content was obtained in the P2 treatment (egg white), which was 18.9%, while the treatment with the addition of tapioca flour showed the lowest protein content of 12.8%. Sensory value using Kruskal waliss treatment that gets a high average value is the aroma, taste, and texture of the addition of egg white fillers, while the texture is with the addition of Euschema cottonii seaweed fillers. Egg white significantly increased the protein content. The best formulation based on nutritional content and panellists' liking value was F2 (Surimi + Egg white). This study shows the potential for the development of milkfish-based processed products that are highly nutritious and functional..

Physical modification of starch using microwave heat treatment (MHT) technology serves as an efficient and environmentally friendly alternative to enhance the functional properties of starch without chemical additives. This article aims to examine the influence of microwave power and heating duration on the swelling power and solubility of various starch types, including tapioca, taro, sago, and lotus rhizome. A review of four studies revealed that power and time parameters significantly affect the crystalline structure of starch granules, resulting in either enhancement or reduction of their functional properties. High power or prolonged heating may decrease swelling power due to crystal restructuring and granule disruption, while solubility increases as a result of amylose and amylopectin degradation. MHT has proven to accelerate the heating process in a volumetric and efficient manner, improving water absorption capacity and viscosity. Despite its drawback of uneven heat distribution, this method remains relevant as a physical modification technique aligned with green processing principles in the food industry.

Stick is a tasty, healthy, and high-protein snack. Goat milk less optimised due to the assumption that goat's milk smells like a goat, so most people don't like to consume it. Tofu is used as a addition for sticks, because tofu is a food that contains the best non-animal protein. The research was purposed to increase  consumption of goat milk and white tofu by processing it into milk sticks. In addition, it can also produce milk sticks that are rich in protein and liked by panellists. The experimental design used was a Completely Randomized Disign (CRD) with the first factor being the ratio of curd goat milk and tofu (60%:40%, 50%:50%, 40%:60%) and the second factor being the ratio of wheat flour and tapioca starch (40%:60%, 50%:50%, 60%:40%). The results showed that the substitution of goat milk curd and tofu and the ratio of wheat flour to tapioca starch had a significant effect on characteristics of the milk stick. The best product from several stick formulations in terms of chemical, physical and organoleptic properties is the stick formulation with 60% etawa goat milk curd: 40% white tofu and 60% wheat flour: 40% tapioca starch has a high protein value of 11.51% with a moisture content of 2.27%, ash content of 1.94%, fat content of 32.51%, carbohydrate content by different 51.78%, while etawa goat milk curd sticks with white tofu substitution which has overall level of preffered value of panellists is found in the ratio 3.39 (preferred). Stik  from curd protein of etawa goat milk with white tofu be a potensial source of  protein.

Indonesian people widely consume tomato sauce as a condiment or food seasoning. The natural thickening agent commonly used in tomato sauce is starch, generally based on tapioca or cornstarch. The use of breadfruit starch as a thickener is rarely studied and needs to be researched scientifically. This research aimed to evaluate the role of breadfruit starch as a thickener in tomato sauce. This research began with extracting breadfruit starch through wet milling and continued with making tomato sauce based on breadfruit starch. The concentration of breadfruit starch was varied in 3 levels, namely 0.5%, 1%, and 1.5%. Commercial tomato sauce was also evaluated and used as a comparison. Viscosity, color, and organoleptic analyses were conducted on tomato sauce products. The results showed that tomato sauce based on 1.5% breadfruit starch had a higher viscosity (3220.5 cP) than the addition of 0.5% (572 cP) and 1% (1093.5 cP) starch, but it was still much lower than the viscosity of commercial tomato sauce (6922.5 cP). In terms of color, breadfruit starch-based tomato sauce is not much different from commercial tomato sauce in terms of brightness (L: 32-35), redness (a: 9-11), and yellowness (b: 10-15). After organoleptic analysis, the panelists rated the breadfruit starch-based tomato sauce as mediocre (average score 3), compared to the commercial tomato sauce, which the panelists preferred (score 4). These findings indicate that breadfruit starch has potential as a thickener for tomato sauce because it can resemble the quality of tomato sauce in terms of color. However, the concentration of added breadfruit starch still needs to be increased to increase the thickness of the tomato sauce and its acceptance by consumers.

Sausage is one of frozen food product that’s popular among the society. Mackerel is classified as a fish that’s low fat and higher in protein, and also has characteristics like white meat, thick and didn’t had contain many thorns, so it’s suitable for used in the processed of fish sausage. Innovation of fish sausage can be carried out by fortification provitamin A from carrot paste, and produced gluten-free mackerel sausage product by using sago flour and tapioca starch as a binder. The purpose of this study was to identify  characteristics of mackerel sausage fortified of carrot paste which is high in protein and β-carotene. The experimental design used is a Completely Randomized Design (CRD) with the first factor being the ratio of mackerel and carrot paste 75% : 25%, 50% : 50%, 25% : 75%. The second factor was the ratio of sago flour and tapioca starch as filler of sausage 80% : 20%, 60% : 40%, and 40%: 60%. The analysis indicated that the formulation of mackerel sausage which is highs in protein and the most preferred by consumers is found in the ratio of 75% mackerel : 25% carrot paste and 80% sago flour : 20% tapioca starch with a protein content of 11,36% and an overall level of preference is 3,55 (neutal). The mackerel sausage formulation that’s highs in β-carotene is found in the ratio of 25% mackerel: 75% carrot paste and 60% sago flour: 40% tapioca starch by 876 µg/g. Fortified carrot paste in mackerel sausages could be a  potensial source of protein and β-carotene.

The purpose of this research was to study the manufacture of milkfish and carrot sausages by treating the proportion of tapioca flour: taro starch and the addition of egg white on physicochemical and organoleptic properties. The use of taro starch is because contains amylose and amylopectin which can bind air more strongly and can make the texture more springy. Carrots are used for coloring sausages because they contain carotenoid compounds. Egg whites are used to increase protein levels. This study used a completely randomized design with two factors, namely the proportion of tapioca flour to taro starch (75:25; 50:50; 25:75) and the addition of egg white (3, 6, 9%). The results showed that the proportion of tapioca flour: taro starch and the addition of egg white had a significant effect on moisture and ash content. However, it did not significantly affect the levels of fat, protein, starch, emulsion stability, and hardness. The best treatment was obtained from the combination of the dimensions of the proportion of tapioca flour: taro starch (25: 75) and the addition of 9% egg white which obtained a moisture content of 72.69%; ash 2.45%; fat 2.31%; protein 12.16%; starch 7.14%; emulsion stability 99.06%; hardness 2.59 kg.m/s2; and hedonic color 3.76 (neutral); fragrance 4.00 (like); taste 4.28 (like); and texture 4.48 (like).