Supriyadi - Supriyadi

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Verified

Supriyadi verified their affiliation via an institutional email.

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• Ph.D.
• Professor at Universitas Gadjah Mada

Rambutan peels typically contain anthocyanins that can be utilized as pH-sensitive dye for intelligent food packaging. Therefore, this study aimed to isolate anthocyanins from rambutan peels and investigate their co-pigmentation with gallic acid (GA) to enhance color intensity while maintaining a pH sensitivity. Rambutan peel anthocyanins extracts...

Starch-lipid complexes resulting from inclusions between amylose and fatty acid molecules form helical structures with hydrophilic groups on the outer surface and hydrophobic cavities expected to be applied as stabilizers in emulsion systems. Enhancing the inclusion requires pretreatment to promote the development of starch-lipid complexes. Additio...

Black garlic is garlic processed by heating at a controlled temperature and humidity. The heating process of black garlic is garlic processed by heating at controlled temperature and humidity. Black garlic can be prepared in an electric rice cooker, but information is limited. The purpose of this study was to determine the color, pH, water content,...

Jus jeruk dikenal mengandung vitamin C tinggi diperlukan oleh manusia tetapi vitamin C mudah mengalami fotooksidasi selama penyimpanan dan dapat menurunkan daya terima konsumen. Tujuan penelitian adalah menginvestigasi jus jeruk yang mengandung nanostructured lipid carrier (NLC-RPO) terhadap penghambatan fotooksidasi vitamin C perubahan pH, viskosi...

The problem with ready-to-drink (RTD) black tea is a long manufacturing process and contains phenolic compounds and low antioxidant activity due to the enzymatic oxidation process. Viscozyme is an enzyme that degrades plant cell walls during extraction so that it releases active components from the cell wall, such as phenolic contents and antioxida...

Star fruit has a good nutritional value but was very easy to damage. Edible coating can be used to extend the shelf life of star fruit. Green tea had been added to improve the mechanical properties and functional value of edible coating. This study aimed to evaluate the application of edible coating gelatin‐sodium alginate with the addition of gree...

The chemical composition of four Indonesian stinky beans has been explored. Those bean are Petai (Parkia speciosa), Lamtoro Gung (Leucaena leucochepala ssp. Glabrata (Rose) S. Zarate), Jengkol (Pithecellobium jiringa) and Kabau (Archidendron bubalinum). This exploration belongs to the local food utilization research theme of functional food sources...

Leucaena leucocephala (White leadtree) legume seed is promoted in several countries of Southeast Asia. The young pods are edible and occasionally eaten by Indonesians because of their unique combination taste of savory, sweet and slightly bitter. This study investigated the processing effects of steam blanching on the protein profile (total amino a...

Biocomposite film was successfully produced by combining bacterial cellulose (BC) and sodium alginate (ratio of 80:20) with the addition of glycerol as conventional plasticizer at varied concentration (2, 4, 6% w/w, based on total sample weight) through solution casting method. The influence of glycerol content on structure (by FTIR), mechanical pr...

Red palm oil (RPO) is a potential carotenoid source mostly containing β-carotene. RPO instability requires a delivery system such as nanostructured lipid carriers (NLC). This research aimed to develop an NLC delivery system and study the characteristics of NLCRPO. The melting-emulsification-ultrasonication method was employed to produce the NLC-RPO...

Cocoa pod husk (CPH) is a good source of bioactive components such as phenolic compounds, which are known to have potential as antioxidants. Research on the effects of postharvest storage conditions on bioactive compounds of CPH is still limited. Therefore, this study aimed to evaluate the impact of postharvest storage temperature (20, 30, and 40 °...

Kaempferia galanga L. is a rhizome plant that is rich in health benefits, it can be processed into a herbal drink by heating. Meanwhile, heating is carried out to kill certain pathogenic bacteria present in a product with a minimum loss of nutrients and to maintain the bioactive compounds. Therefore, this study aimed to evaluate the effect of heati...

Young coconut mesocarp (YCM) contains considerable phenolic compounds that provide high antioxidant activity. However, the YCM is identified as an underutilized by-product in food industries. A novel functional food derived from YCM, viz., cookies, was proposed through this study to take advantage of the containing antioxidants. The cookies were pr...

Passion fruit pomace, a by-product of passion fruit juice processing, is a source of carotenoids that can be utilized for food products as an antioxidant. The purpose of this study was to determine the optimum condition of carotenoid extraction process from passion fruit pomace using ultrasonic waves with coconut oil as a solvent, to determine the...

Waru leaf (Hibiscus tilaceus) is commonly used as a traditional food packaging material in Indonesia. Waru leaf is known to contain bioactive components with antioxidant and antimicrobial activity. This research aimed to determine the chemical properties of waru leaf of various maturity levels and provide information on the potency of leaf extract...

Witasari LD, Lizar DP, Florencia OM, Ramadhan A, Fiana NAO, Supriyadi S, Pratiwi SUT, Nandika D, Karlinasari L, Arinana A, Batubara I, Santoso D, Rachmayanti Y, Firmansyah D, Sudiana IK, Hertanto DM, Rachmayanti Y, Firmansyah D. 2023. Designing antimicrobial active packaging films based on chitosan plus fungus comb ethyl acetate extract from Indo-M...

The significant concerns associated with the widespread use of petroleum-based plastic materials have prompted substantial research on and development of active food packaging materials. Even though fish gelatin-based films are appealing as active food packaging materials, they present practical production challenges. Therefore, this study aimed to...

The nutrient and anti-nutrient composition of jack bean sprouts were investigated as a local alternative protein source. This study used six germination time treatments of 12, 24, 36, 48, 60, and 72 hrs. The morphology of the sprouts was studied using a descriptive approach, while the nutrition and anti-nutritional components were analyzed by analy...

This study aimed to determine the effect of drying and distillation time on the physicochemical properties and antioxidant activity of essential oil from holy basil (Ocimum tenuiflorum) leaves. The leaves were subjected to different drying treatments to obtain fresh, wilted, and dried samples. The microstructure tissue of the various treatment samp...

Konjac glucomannan (KGM) is a water-soluble polysaccharide that has the potential to be used as a natural emulsifier because of its high viscosity. This study aimed to modify the KGM structure in order to obtain a KGM which has amphiphilic properties. Modifications were carried out in the microwave using 1-3% sodium carbonate (Na2CO3) and 2-4% octe...

Sugar palm starch (Arenga pinnata) can be utilized for food and non-food products. The natural properties of native starch are high viscosity, fast retrogradation problems, unstable to heat and acid, and low paste resistance. Therefore, modifying sugar palm starch is necessary to improve its physicochemical characteristics. Microwave and acetylatio...

Black tea has a lower antioxidant capacity than other teas, such as green tea, white tea, and oolong tea. Tannase and tyrosinase can be used as a treatment to improve the quality of black tea infusion. Tannase has been reported to be an effective way to enhance antioxidant activity in black tea infusion. Meanwhile, tyrosinase could produce higher t...

Green tea in Indonesia has an astringent and bitter taste due to its high catechin content. Adding amino acids and reducing sugars in green tea processing will increase the desirable flavor and cover the astringent and bitter flavors by increasing the Maillard reaction. Research on the manufacture of green tea with the addition of glutamate and fru...

Lokio (Allium chinense G Don) is widely used as seasoning in cooking because it contains amino acids that contribute to taste. Lokio is easily damaged during physical and chemical storage, affecting its quality. The study aims to determine the chemical changes of lokio leaves during storage. This study used a randomized design group with 3 temperat...

Melon (Cucumis melo L.) has polymorphic varieties that affect genetic diversity. Melon cv. Meloni and cv. Tacapa Green Black are new cultivars produced by Universitas Gadjah Mada. The information about respiration rate, volatile compounds, and firmness, including the impact on storage time of those novel cultivars, is not available yet. This work a...

An alternate plant-based protein, jack bean sprout, was explored as a source of bioactive peptides. Germination to increase dipeptidyl peptidase-IV (DPP-IV) inhibitory peptide in jack bean sprout flour has yet to be reported. Therefore, this study aimed to investigate the optimal condition to maximize the content of bioactive peptides with maximum...

Teak tree (Tectona grandis) is a tropical tree whose wood is often used in the furniture industry, while the leaves are still underutilized. Teak leaves possess active compounds with potential to be further explored. On the other hand, currently biodegradable-based packaging is being developed to address environmental problems. For this reason, res...

Papaya fruit is a climacteric fruit that undergoes physical and chemical changes very quickly during storage. The edible coating is one method that can extend the shelf life of minimally processed fruit such as papaya. To improve the effect of edible the mechanical properties and functional value of edible coatings, black tea was added. The researc...

Bean sprouts are potential plant proteins that produce DPP-IV inhibitory peptides. These peptides must be stable and active in the brush border membrane of the small intestine to inhibit DPP-IV. The purpose of this research is to evaluate the DPP-IV inhibitory activity of jack bean sprouts using pepsin-pancreatin during simulated digestion, as well...

A Nanostructured lipid carrier (NLC) is an emulsion system that can encapsulate and improve stability of lipid-based bioactive compounds. This study aimed to develop an optimal RPO-NLC formula with a combination of solid and liquid lipids, lipids and surfactants, and the use of high-pressure homogenizer (HPH). RPO-NLC was made using HPH with a 400...

One of the greatest challenges encountered by the food industry is the loss of quality of food products during storage, especially perishable foods such as chicken breast, which eventually adds to the waste. Edible films are known as a potential alternative to maintain food quality and also improve shelf life by delaying the microbial spoilage and...

Matcha gained popularity due to its health benefit as the awareness of the consumers' well-being increased. The product contains antioxidants, mainly catechin, and a unique taste. Matcha is commonly produced from Camelia sinensis var sinensis, whereas in other Asian regions with shading practices, C. sinensis var assamica is primarily cultivated. B...

The germination of lamtoro gung has been shown to increase the angiotensin-I-converting enzyme inhibitory (ACE-I) activity in previous studies. The 48 h germinated flour had the highest ACE-I activity. Administration of the gastrointestinal digestion (GID) simulation with commercial enzymes was expected to increase the ACE-I activity. However, the...

Coconut (Cocos nucifera) fruit has attracted consumer interest due to its health benefits, especially the consumption of coconut water produced from 6–7-month-old coconut fruit. Consequently, by-products from young coconut fruit are also being expanded, including coconut mesocarp containing phenolic compounds. Therefore, this study aimed to provide...

As a key volatile compound, the β-ocimene volatile compound in Salam leaves may change due to processing. Thus, this study aims to examine the effect of the drying process on the water activity, pH, total soluble protein values, 1-deoxy-D-xylulose-5-phosphate synthase, geranyl diphosphate synthase, and monoterpene synthase enzyme activities, and to...

The objective of the research was to study the potential of young coconut (Cocos nucifera L.) leaf extract as an antioxidant and antibacterial active agent. The specific objectives were to examine the physical, mechanical, antioxidant and antibacterial activity of chitosan-based film incorporated with the young coconut leaf extract. Preparation you...

PT. Pagilaran was developing five new clones that were named as PGL 9, PGL 10, PGL 11, PGL 12 and PGL 15 as superior clones for black tea. That clones are very potential to be used as ready to drink (RTD) instant tea beverages. Ready to Drink (RTD) from black tea have a weakness, which was low antioxidant activity. Tannase was an industrial enzyme...

Biji Petai (Parkia speciosa Hassk.) merupakan komoditas kacang-kacangan khas Indonesia dengan kandungan protein yang tinggi. Namun, biji Petai juga dikenal mengandung senyawa antigizi asam fitat, tanin dan tripsin inhibitor yang dapat menurunkan nilai cerna protein. Proses pengolahan konvensional kukus selama 10 menit, rebus selama 8 menit, dan gor...

Kabau, Jengkol, Petai dan Lamtoro merupakan komoditas polong-polongan indigenous Indonesia yang telah banyak dibudidayakan dan dikonsumsi sejak zaman dahulu, berkembang lama dan dikenal masyarakat di suatu daerah tertentu di Indonesia. Banyaknya kandungan gizi pada komoditas ini sehingga dapat dimanfaatkan menjadi produk baru seperti tepung. Tepung...

Salam leaf (Syzygium polyanthum) is an Indonesian traditional herbs with high bioactive compound potential. Unfortunately, as an alternative method that is friendly to heat-susceptible bioactive compound, the ultrasonication extraction method has not been widely used to extract Salam leaves. Meanwhile, the processing time and the ratio of the use o...

Heterosis or hybrid vigor is the improved performance of a desirable quality in hybrid progeny. Hybridization between high-productive Assam type and high-quality Chinese type clone-cultivar is expected to develop elite tea plant progenies with high quality and productivity. Comparative transcriptomics analyses of leaves from the F1 hybrids and thei...

Highlights • The activity of the enzyme that plays a role in the biosynthesis of terpenoid compounds, namely the DXS enzyme, has a higher activity than the HMGR enzyme in this research. Similarly, the total value of the resulting metabolite products, namely DXP, MVA and IPP. These results indicate the DXP pathways dominance in terpenoid biosynthesi...

Surfactants are used to reduce surface and interfacial tension to form emulsions. Polysaccharides such as Porang Glucomannan (PG) with high viscosity can be used as surfactants. This research aimed to optimize the concentration of sodium carbonate (Na2CO3) and octenyl succinic anhydride (OSA) in modifying PG using a microwave. The optimization proc...

Coconut is widely used as a food source in producing countries, and during consumption, the waste that is generated needs to be reduced through by-products processing to ensure environmental sustainability. This study aimed to assess the functionality of by-products (endo- and mesocarp) of coconuts at early and mature stages. The aqueous and ethano...

This study is aimed at optimizing the Saffron essential oil (SEO) nanoparticles using the ionic gelation method. Response surface methodology (RSM) with Box-Behnken design (BBD) was applied to investigate the optimum conditions and the effects of three independent variables: LWCS concentration (0.1-0.3%), Arabic gum concentration (9.6-9.8%), and ra...

The manufacturing of ready-to-drink black tea was through a long process, up to 14-18 hours. There was an alternative way to produce RTD black tea directly on the farm to reduce time production and improve the quality of black tea using exogenous enzymes, i.e., tyrosinase and β-glucosidase. Tyrosinase was investigated for the ability to improve the...

Lamtoro [Leucaena leucocephala (Lam.) de Wit] merupakan komoditas pangan lokal Indonesia yang berpotensi sebagai pangan sumber protein, namun biji lamtoro tua kurang diminati. Proses pengolahan yang dapat diaplikasikan pada biji lamtoro tua adalah perkecambahan, yang kemudian hasilnya biasa diolah menjadi berbagai makanan khas Indonesia. Lamtoro tu...

Biocomposite of bacterial cellulose-alginate has been developed for use as food packaging material. This study aims to understand the physical and mechanical properties of the biocomposite produced from static fermentation of Gluconacetobacter xylinus InaCC B404 in media supplemented with alginate. The strain was grown in a medium containing algina...

Indonesian bay leaves [IBL; Syzygium polyanthum (Wight) Walp.] are frequently used as a seasoning in various Indonesian cuisines. The potential of IBL leaves extract as an antioxidant and aroma source based on the leaf maturities and withering durations is not yet known. Therefore, the present work aimed to study the effect of IBL leaf maturities a...

Hypertension is a significant public health problem worldwide, a leading risk factor for cardiovascular disease and cause of premature death. Angiotensin-I-converting enzyme (ACE) activity is one of the causes of hypertension. Lamtoro Gung has potential as an Angiotensin-I-converting Enzyme Inhibitory (ACE-I) due to the presence of peptide that abl...

Black tea aroma is one of the essential attributes in determining the quality of black tea. β-Glucosidases were investigated for their ability to enhance the aroma of black tea by hydrolyzing the glycoside compound. The addition of β-glucosidase was done by dissolving the enzyme on a sodium citrate buffer (pH 5.0), which was then sprayed on tea lea...

This study aims to investigate the role of self-construal in sharpening reputation judgment on earnings management cases. This study involves a personality variable that can provide sharper insights into individual assessments, namely self-construal. The study uses an experimental case with involved participants to judge the ethics of earnings mana...

Traditional food is usually packed with natural packaging materials such as young coconut leaves (janur), but a little scientific information is available related to the packaging material. This study aimed to examine the physical and chemical characteristics of fresh and steamed janur (30 minutes steaming at 100 0 C). The physical and chemical pro...

Arabica coffee is the most popular variety of coffee among the people because it has a more complex flavor than other coffee varieties. This study aims to determine sensory properties and non-volatile components in Arabica coffee fermented with sugar addition. The sensory assessment showed that the best cupping score was the samples fermented with...

Teak (Tectona grandis) leaves is commonly used as the packaging material of traditional food in Indonesia. This study aimed to determine the physical and chemical characteristics of teak leaves with various maturation stages to obtain information about the potency of teak leaves as active packaging material. The physical characteristics analysis in...

This study aimed to determine physicochemical, antioxidant and antibacterial characteristics of tuna skin gelatin edible films containing glycerol or sorbitol plasticizers with turmeric or eucalyptus essential oils (EOs) and their effect on the fresh beef meat appearance and hardness. The results showed that the addition of EOs caused a significant...

The black bamboo leaves that have been widely used by the community for a long time are thought to have bioactive compounds. To find out more, it is necessary to evaluate the levels of phenolic compounds and flavonoids which are reported to function as antioxidants and antimicrobials. In addition, antioxidant and antimicrobial activity tests also n...

Photooxidation is one of the causes of quality deterioration in food. An antioxidant or singlet oxygen quencher is urgently needed to prevent photooxidation. γ-Oryzanol was recognized as a naturally present antioxidant in rice bran products. This research aimed to calculate the singlet oxygen quenching rate and its mechanism of γ-oryzanol to evalua...

Bacterial cellulose-pectin biocomposite is developed as a potential environmentally friendly food packaging material. The objective of this research was to investigate the effects of pectin supplementation to the growth medium of Gluconacetobacter xylinus on the properties of the biocomposite produced. Pectin was added into the growth medium at dif...

Kabau seeds are native to Indonesia legumes which have high protein content. However, kabau seeds also have high anti-nutrient content. Therefore, the processing needs to be done before kabau seeds are consumed to reduce the content of anti-nutrient compounds in them. The processing not only affects the nutritional and anti-nutritional content but...

Kencur ( Kaempferia galanga . L) is a rhizome used to make Jamu, a traditional herbal drink commonly consume in Indonesia, that has been studied to be rich in phytochemical sources with biological properties that contribute to the health of the human body. The purpose of this study is to evaluate the effect of blanching treatment and extraction met...

The demand for daily consumption of tomato fruit is increasing immensely. Nevertheless, the fruit is exposed to mechanical damage, shrinking, and softening as the maturity stages, handling, and storage are inappropriate, thereby affecting the texture. The study aimed to assess the texture profile, pectinase activity, and physicochemical parameters...

Arginine contains positive charged ends that are suitable to bind molecules with negative charge like carbonyl groups of reducing sugar in coconut sap. This research aimed to determine the effect of various arginine concentrations on chemical and antioxidant properties of coconut sap during the heating process. A 2.5 L of coconut sap was added with...

Kabau, an unexplored crop, was analyzed to determine its nutrition and antinutrition components and in vitro protein digestibility (IVPD). Some conventional processes, such as steaming, frying, and boiling, were carried out to study their effect. The results indicated that all of the techniques reduced carbohydrate content. Frying significantly inc...

The aim of this study was to evaluate calcium fixation and calcium binding in calciumfortified rice. Calcium-fortified rice was made by soaking (infusing) rice in a Ca-lactate or Ca-gluconate solution at temperature of 80oC for 20 mins. The rice types used in this study were low-, medium- and high amylose rice, represented by Memberamo, Ciherang an...

Surfactants are used to reduce surface and interfacial tension to form emulsions. Polysaccharides such as Porang Glucomannan (PG) with high viscosity can be used as surfactants. This research aimed to optimize the concentration of sodium carbonate (Na2CO3) and octenyl succinic anhydride (OSA) in modifying PG using a microwave. The optimization proc...

Plant leaves are the primary source of natural colorants for food, mainly due to their chlorophyll content. However, the plant types and the degree of leaf maturity determine the quality and quantity of the chlorophyll. This study aimed to determine the best maturity level of pandan (Pandanus amaryllifolius Roxb.) leaves that serves as potential so...

Chlorophyll is a natural coloring agent that has antioxidant activity. During the extraction and food processing process, chlorophyll is easily degraded and derivatized. The derivatization process results in changes in the chemical structure of chlorophyll which can result in a change in color and its antioxidant activity. The other extracted minor...

Tuna skin gelatin has the ability to form a good film, transparent color, and a good barrier against oxygen, CO2, and lipids. But the tuna skin gelatin edible film needs to be modified by adding hydrophobic materials and surfactants, to improve their physical and functional properties. The objectives were to determine the physical properties, antio...

Maillard reaction may lead to the forming of the brown color of granulated coconut sugar during sap heating. It has been proven that Maillard reaction products (MRPs) have antioxidant activity. It is, thus, necessary to verify that the Maillard reaction occurs during the heating of the sap. This verification would be valuable to figure out the anti...

Rice bran oil (RBO) contains naturally occurring antioxidants such as carotenoids, tocopherol, and γ-oryzanol. The aim of this research was to formulate and evaluate the characteristics of nanoemulsion which was prepared using RBO containing naturally occurring antioxidants. The RBO-in-water nanoemulsion was prepared by the emulsion phase inversion...

The changes in antioxidant compounds and antioxidant activities of melon (Cucumis Melo L.) cultivar Hikapel during postharvest storage at room temperature were evaluated. Melon with three ripening stages (27 DAA, 29 DAA, and 32 DAA) were harvested and stored at 25oC for 20 days. Melon cv. Hikapel were evaluated for their antioxidant compounds such...

Steam explosion was proposed as a pretreatment method to accelerate the hydrodistillation (SE-HD) of kaffir lime leaves. This research aimed to compare SE-HD and conventional hydrodistillation (HD) in terms of extraction yield, extraction time, chemical composition, and essential oil quality. The extraction of kaffir lime oil with SE-HD was superio...

Drying was one of the primary processes in essential oil production. Time factor in drying affects both the content and chemical compositions of essential oils. This study aims to evaluate the influence of the drying time of kaffir lime leaves on the yield at room temperature and the major volatile compounds in the essential oils by observing day-t...

The packaging is important in our life. Banana leaf is one of the traditional packaging materials that is widely used because it has wide leaves and is not easily torn. However, traditional packaging has been abandoned by many people, so active packaging needs to be developed that has an advantage of modern and traditional packaging. In this study...

Tamarillo is an underutilized fruit in Indonesia, despite the fact that it contains two pigments (anthocyanin and carotenoid) with different properties (polar and non polar). Besides, there is a scarce information about extraction of anthocyanin and carotenoid of Tamarillo using sonication extraction. This study was aimed to investigate the compari...

Coconut sap is sweet, oyster-white and translucent liquid which can be obtained by tapping coconut flowers for 8 ̶ 12 hours. Since it contains sugar with nearly neutral pH, coconut sap is highly susceptible to spontaneous fermentation. In order to maintain the quality of the sap during the tapping process, coconut farmers usually add preservative s...

Alginate has properties for gel formation in the presence of Ca2+ ions, which can be used to produce an analog pulpy orange.The purpose of this study was to obtain the optimum concentration of alginate and CaCl2 in producing analog pulpy orange using response surface methodology (RSM). The purpose of this research is also to study the characteristi...

ABSTRAK Alginat memiliki sifat dapat membentuk gel dengan adanya ion Ca 2+, yang dapat dimanfaatkan sebagai bahan dasar pembuatan bulir j eruk analog. Tujuan penelitian ini adalah untuk mendapatkan konsentrasi alginat dan CaCl 2 yang optimum dalam pembuatan bulir jeruk analog dengan menggunakan response surface methodology (RSM) dan mempelajari kar...

Jengkol (Pithecellobium jiringa) is a typical plant in the tropical region of Southeast Asia that is mostly liked by indonesian people because of savory taste. Jengkol seeds having high protein and healthy effects need processing for keeping their nutrient quality. This study aims to determine the effect of steam blanching on the non-volatile taste...

Klutuk banana leaf is widely used as food packaging material since it has large size and not easily torn. Many traditional packaging materials are recently abandoned, thus it is necessary to develop an active packaging having an advantage of synthetic packaging. This study aimed to create active packaging from methylcellulose (MC) added with glutar...

Characteristics of collagen are influenced by the source of raw materials and extraction methods used. The aim of this research was to characterize the acid- and pepsin-soluble collagens from the dry scales of the striped snakehead (Channa striatus). Collagen was extracted using to methods including 0.5 M acetic acid and 0.1% pepsin. The yield of a...

In several countries, majority of food by product or food waste is produced by households, while approximately 39% losses occur in the food manufacturing industry where approximately 14% in food service sector and the other remaining 5% in retail and distribution. A large number of food by-products or food waste are increasing recently due to sever...

In this study focuses on the purification system of Synthetic gas from particulates (char-ash and soot) that proper with the characteristic of palm starch waste by using the cyclone separators. The objective of this study is to analyze the geometry of cyclone separator that suitable for gasification process of palm starch waste. The gasification pr...