Dian Shofinita

Bandung Institute of Technology | ITB · Department of Chemical Engineering

Rice bran is a promising source of functional food due to its high phenolic content. Microwave-assisted extraction (MAE) has become a widely used method for optimizing phenolic extraction from rice bran. However, understanding the phenolic extraction process using the MAE method is challenging due to the system’s complexity. Modeling and simulation...

Coffee consumption could provide various benefits for human health, but also could contribute to several health problems. The growing trend of coffee consumption has created a rising demand for decaffeinated coffee that is safe for consumers with low caffeine tolerance. Decaffeination process, however, can result in the alteration of several proper...

Defatted rice bran (DRB) is a by-product derived from rice bran oil production. The commercial value of DRB could be increased by using it as a raw material in the production of proteins or phenolics. Unfortunately, the oil extraction process may lose nutritional value, including its protein and phenolics compound. This study aims to compare the pr...

The high productivity of mangosteen and its utilization in various industries produce the mangosteen peel as a waste of the process. Mangosteen peel as a lignocellulose‐based material has great potential to be utilized as a biosorbent, especially in the separation process of wastewater pollutants. Previous studies on mangosteen peel biosorbent are...

Defective coffee beans amount to 15-20% of the total produced coffee beans. The defective coffee bean contains caffeine, which can negatively affect the human body, such as increased heart rate, and thus sensitive to consumption by some people. This study aims to optimize the decaffeination process of defective coffee beans. The extraction of aroma...

Drying is one of the key steps in the coffee production process. It is necessary to dry the coffee extracts to prevent microbial growth and to prolong the storage time of coffee. To this date, mechanical drying methods have been developed and employed in industries to shorten the drying time. However, these drying methods could alter the physicoche...

Abstract One of the important food additives used in the food industry is betalain, which is applied as a natural dye. Red beet is the most common resource of betalain. To increase its shelf life, encapsulation followed by drying is commonly carried out. However, betalain is a heat‐sensitive pigment that is susceptible to degradation on thermal exp...

Rice bran (RB) has received much interest in the functional food industry. However, the quality of RB declines soon after milling due to lipase activity. Drying involves heat that stabilizes the RB by damaging lipase. Hence, the drying process of the RB is a crucial step in its utilization. This research aimed to develop mathematical models represe...

Mango is one of the most favored tropical fruits which potentially as an export commodity in Indonesia. However, this fruit is easily damaged and has a short shelf life. One way to extend the shelf life of fruits is to use edible coatings. This study aimed to determine the effect of storage temperature and edible coatings on the shelf life of mango...

Article Info Importance of the work: Some studies show that thermal stabilization may degrade the phenolic components in rice bran, while others indicates the opposite. Objectives: To evaluate the effects of natural convective stabilization (NCS) and forced convective stabilization (FCS) on rice bran stability. Materials & Methods: Freshly milled r...

One potential utilization of dragon fruit skin is to produce bioactive materials as natural antioxidants and colorants for the food industry by extraction and spray drying. This study investigated the quality (total phenolic compounds/TPC, betacyanin and betaxanthin contents, and antioxidant activity) of the extracts and spray-dried products, and t...

Abstrak. Dalam rangka meningkatkan komoditas susu di Indonesia, pemerintah menargetkan sapi perah lokal harus mampu menyuplai 41% produksi susu dalam negeri pada 2022. Salah satu cara untuk menaikkan produksi susu sapi adalah memberikan suplemen pakan berupa sabun kalsium. Sabun kalsium telah banyak digunakan di luar negeri, namun tidak di Indonesi...

In this study, the economics of the various way production of natural colorant has been evaluated, specifically related to the effect of the drying methods: spray drying and freeze-drying. It has been found in this study that, the manufacturing costs of the food colorant in the form of extract, spray-dried powder, and freeze-dried powder were USD 6...

Emulsifier is added in food products to maintain the shape of the food and stabilize it in an emulsion system. One of the emulsifiers commonly used in bread is sodium steroil-2-lactylate (SSL). SSL is the reaction product of stearic acid and lactic acid, with the addition of sodium hydroxide. This study aims to determine the effect of temperature,...

The food industry is a life-long and highly demanded industry as it is an essential human need. Food safety has become an urgent discussion related to this industry since the foodborne disease has gradually increased. One of the causes of the disease is L. monocytogenes, usually discovered in fresh meat, ready-to-eat meat, vegetables, and milk. L....

This study aims to produce natural pigments for food prepared from dragon fruit skin by extraction and freeze-drying and to assess the effect of additional ethanol as extraction solvent on the process yield. During extraction stage, the effect of solvent (pure water and additional ethanol) on the yield of bioactive materials was assessed. Furthermo...

Indonesia is the largest palm oil producer in the world and contributes to about 58% of the world’s total palm oil production in 2018. Palm fatty acid distillate (PFAD) is a palm oil refining by-product that contains lots of free fatty acids. Previous research related to the production of calcium soap has successfully found the right stoichiometry...

Dragon fruit skin has been previously reported to contain several bioactive materials, such as antioxidant compounds, phenolic compounds, and pigments (betacyanin and anthocyanin). The utilization of dragon fruit skin wastes to produce food colorant that is also rich in bioactive materials is expected to lower agricultural wastes and also provide a...

Palm Fatty Acid Distillate (PFAD) is a by-product of Crude Palm Oil (CPO) refinery. As the largest CPO producer, Indonesia exported an abundant amount of PFAD without further processing. The use of calcium soap as a supplement for ruminant feed will increase the productivity of dairy cows in Indonesia. Hence, this study reported in-vivo tests that...

The breastfeeding dairy cows often go through metabolic disturbances and low milk production due to the use of stored body fat and minerals to assist milk production. Those problems can be solved by feeding feed supplement to the dairy lactating cows. Calcium soap is a well-known lactating dairy cattle feed supplement, which gives energy in the for...

Dairy cows often get metabolic disorders and low milk productions during lactating periods because the animals don’t have adequate feed supply and use only the food reserves from their body. Supplementary fat is known to provide sufficient energy but creating problem with fiber digestion in the rumen. The calcium salt of fatty acids is being used t...

High production of crude palm oil has led Indonesia to become one of the countries that have a large number of palm fatty acid distillate (PFAD) in the world. As a source of fatty acid, PFAD has wide range of uses, including as a fat supplement in the ruminant feed when reacted with a calcium source such as calcium oxide (CaO). At the working tempe...

As the largest palm oil producing country in the world, Indonesia also produces abundant amount of Palm Fatty Acid Distillate (PFAD), a by-product of Crude Palm Oil (CPO) refining process. PFAD can be utilized as the raw material for calcium soap, ruminant feed that is widely used to increase milk yield, as well as to increase the ruminant's fertil...

Calcium soap is potentially used as fat supplements for ruminants since it contains high concentration of fat and calcium that are useful for ruminants. The consumption of calcium soap may increase the yield and the fat content of milk, as well as increase the ruminant’s fertility. Calcium soap can be produced from palm fatty acid distillate (PFAD)...

Polyurethanes are one of many types of polymers that are currently being developed worldwide. Some studies reported many substances involved in synthesizing polyurethanes (PU), with mostly originated from a biomass substance. Our laboratory has synthesized natural fiber – based PU to obtain hybrid PUs through varying reaction variables such as temp...

The microbial fuel cell (MFC) is an alternative technology that can be used to simultaneously solve problems related to wastewater production and energy demand. This study investigates the influence of electrode distance on power density in a microbial fuel cell using tapioca wastewater. A graphite sheet without metal catalyst was used for both ele...

Phenolic compounds have been reported to show both antioxidant and pro-oxidant properties. The effects of spray drying conditions on the balance between antioxidant and pro-oxidant properties of orange peel extract have been evaluated in this work. The inlet drying temperatures (ranging between 100-175°C) gave no significant effect on the redox rec...

Citrus peel has been reported to contain bioactive compounds, such as phenolic compounds, ascorbic acid and carotenoids. A comparison of the quality and quantity of materials produced by extraction and spray drying of different citrus peels (orange, lemon, lime, and mandarin) has been conducted. The average total phenolic contents (TPC) of all citr...

Orange peel extract powders were produced using two steps: microwave-assisted extraction and spray drying. The extraction solvent-to-solid ratio has been found to significantly affect the level of total phenolic compounds in the extract and powder. Under the outlet air temperatures between 43 and 79 °C, spray drying of orange peel extracts resulted...