Stenochlaena palustris is a Stenochlaena species that is often found in marshes, palms and often forms thick bushes which stretch all over the world. Some of these species were used as antioxidants and antibacterial activities. This study aimed to isolate the secondary metabolites of n-hexane extract contained in S. palustris and to determine the toxicity activity of the extracts, fractions, an…
ABSTRACT Papaya leaves (Carica papaya L) have long been used by Indonesians for food and medicine. Papaya leaves have been reported to have several benefits, namely antitumor, dengue fever, and have antioxidant properties. The antioxidants in papaya leaves can be obtained from the flavonoid compounds contained in the leaves. This study aims to determine the levels of flavonoids extracted f…
ABSTRACT Generally, durian seeds are waste in the surrounding environment. The high starch content in durian seeds has the potential to be processed into flour. At the flour manufacturing stage, the drying process affects the characteristics of the flour produced. This study aims to determine the effect of drying temperature variations on the characteristics of durian seed flour in the for…
ABSTRACT Gelatin was a natural product that was obtained from hydrolysis of collagen. Gelatin comes from beef, fish, pork, chicken feet, etc. This study aimed to extract gelatin from chicken feet, know the effect of immersion time in HCl 5% 250 mL solution (3,5,7 days) and chicken feet texture (smooth and coarse) on yield and some physical properties of gelatin products from chicken feet. …
ABSTRACT Sodium Silicate is a raw material that is widely used as a filler in the detergent, soap and toothpaste industries. Sodium silicate can be synthesized from silica (SiO2), which can be obtained through the extraction process from silica-containing materials such as sand, clear glass waste or straw. In the synthesis of sodium silicate, silica is reacted with NaOH solution at a relat…
ABSTRACT Silica sand is a material that is commonly found in Indonesia. However, the silica sand found is not in a pure state, so it needs to be refined. One method for purifying silica from its impurities is the acid leaching method. Acid leaching or liquid solid extraction method is a contact between the solid phase and the liquid phase (acid) where the solute diffuses from the solid pha…
ABSTRACT Silica sand is a material that is commonly found in Indonesia. However, the silica sand found is not in a pure state, so it needs to be refined. One method for purifying silica from its impurities is the acid leaching method. Acid leaching or liquid solid extraction method is a contact between the solid phase and the liquid phase (acid) where the solute diffuses from the solid pha…
ABSTRACT Sodium Silicate is a raw material that is widely used as a filler in the detergent, soap and toothpaste industries. Sodium silicate can be synthesized from silica (SiO2), which can be obtained through the extraction process from silica-containing materials such as sand, clear glass waste or straw. In the synthesis of sodium silicate, silica is reacted with NaOH solution at a relat…
ABSTRACT Bio-oil is a fuel alternative to substitute crude oil which are renewable (renewable fuel), which means that bio-oil can be produced continuously since made from raw material that is renewable, i.e. plants. The raw material used in this study is a Palm Empty Fruit Bunches (EFB) and used tires of motorcycle. The purpose of this study was to know about the effect of reaction time on…
ABSTRACT Bio-oil is a fuel alternative to substitute crude oil which are renewable (renewable fuel), which means that bio-oil can be produced continuously since made from raw material that is renewable, i.e. plants. The raw material used in this study is a Palm Empty Fruit Bunches (EFB) and used tires of motorcycle. The purpose of this study was to know about the effect of reaction time on…
ABSTRACT Banana peels are quite a lot of waste material (banana fruit waste). Banana peel waste contains high nutrients, especially in vitamins and minerals so that it can be used as food raw material by processing it into flour by drying and sieving. The purpose of this study was to determine the effect of variations in soaking time using sodium metabisulfite solution (Na2S2O5) for 0, 20,…
ABSTRACT Banana peels are quite a lot of waste material (banana fruit waste). Banana peel waste contains high nutrients, especially in vitamins and minerals so that it can be used as food raw material by processing it into flour by drying and sieving. The purpose of this study was to determine the effect of variations in soaking time using sodium metabisulfite solution (Na2S2O5) for 0, 20,…
ABSTRACT Gelatin was a natural product that was obtained from hydrolysis of collagen. Gelatin comes from beef, fish, pork, chicken feet, etc. This study aimed to extract gelatin from chicken feet, know the effect of immersion time in HCl 5% 250 mL solution (3,5,7 days) and chicken feet texture (smooth and coarse) on yield and some physical properties of gelatin products from chicken feet. …
ABSTRACT The characteristics of SBE and quicklime almost resemble sand, but have finer particles, therefore these two materials are used in this study as a substitute for some of the sand in brick making. The purpose of this study was to determine the effect of the variation in the addition of the amount of SBE and quicklime used in the making of the concrete blocks and the quality of the …
ABSTRACT Flour is a solid particle in the form of fine grains and even very fine depending on the grinding process which can come from vegetable and animal materials. This study aims to make flour from banana peel of Kepok with variations in drying time and determine the effect of variations in drying time on moisture content, ash content, fat content, glucose content, color and odor of th…
ABSTRACT Flour is a solid particle in the form of fine grains and even very fine depending on the grinding process which can come from vegetable and animal materials. This study aims to make flour from banana peel of Kepok with variations in drying time and determine the effect of variations in drying time on moisture content, ash content, fat content, glucose content, color and odor of th…
Diabetes and its complications are non-communicable diseases which strongly associated on increasing mortality and morbidity rate in Indonesia. As a medicinal plant used by ethnomedicin in Talang Mamak tribe, Rakit Kulim District, Indragiri Hulu Regency, Riau Province, Anisophyllea disticha has its own special interest to become object study because its potential activity as a drug has not been…
In making biopelet from empty palm oil bunch waste with the addition of oil sludge as co-firing, it is carried out using torefaction and disinfection methods. The torefaction method is a thermal conversion by decomposing the chemical bonds of lignocellulosic material consisting of hemicellulose, cellulose, and lignin contained in empty palm fruit bunches. The purpose of this study was to determ…
In making bioplastic of starch and PVA, the data supporting does require raw materials' miscibility into the water solvent. To have expected high solubility of water to starch and PVA to produce the desired properties. Miscibility can predict using phase equilibrium methods. In this study, the equilibrium of starch, PVA, and water was determined using the UNIFAC method. Using the UNIFAC method …
Conventional plastics produce waste that was difficult to decompose and needed to substitute with starch-based bioplastics. Sago consist of 27-35% amylose and 50-73% amylopectin, which have the potential to be used as a material for starch-based bioplastics. This study aims to determine the optimal value of Microcrystalline Cellulose (MCC), citric acid and sorbitol for the characteristics …