Yusuf Wibisono

Brawijaya University · Bioprocess Engineering

Nanostructured lipid carriers (NLCs) are gaining attention as the new generation of lipid vehicles. These carriers consist of saturated lipids with small drops of liquid oil dispersed into the inner lipid matrix and are stabilized by a surfactant. Conventionally, NLC-based drug delivery systems have been widely studied, and many researchers are loo...

Fresh and clean water is an essential source of life. It can be supplied from the oceans, rivers, lakes, streams, and marshes. Nowadays, clean water availability has become a problem in several areas. Several problems usually occur, including the local ecosystem and air conditions, so they cannot be used properly. It is one area vulnerable to clean...

The use of Cyrene™ as an alternative non-toxic solvent to produce a PVDF-based ultrafiltration membrane was investigated in this study. Polyethylene glycol (PEG) and polyvinylpyrrolidone (PVP) were used as organic additives to explore its ability to improve membrane hydrophilicity. The additives were introduced into the casting solution via phase i...

This study aimed to determine the phenomenon during sorption on the whole dried and powder butterfly pea under room temperature storage. In addition, identified thermodynamics, hygroscopicity, degree of caking, and physicochemical properties to determine the quality of dried butterfly pea. Experiments applied the static gravimetric method by satura...

Dye-contaminated wastewaters from the printing batik industry are hazardous if discharged into the environment without any treatment. Finding an optimization and reusability assessment of a new fungal-material composite for dye-contaminated wastewater treatment is important for efficiency. The study purposes to optimize fungal mycelia Trametes hirs...

Anion Exchange Membranes (AEMs) are positively charged polymer membrane used in many applications. In RED systems, AEMs could be used to separate ions to produce energy, and on the other hands remove unwanted molecules in wastewater. This study used three masses of colloidal silica (SiO2) as inorganic filler, three mass ratios of polymer mixture (w...

The water resource crisis and concerns with environmental pollution prompt the necessity to upgrade conventional wastewater treatment processes. The microalgae-based wastewater treatment process has shown many advantages that can fulfill the stricter demands for improved wastewater treatment. Microalgae cultivation can be carried out in different p...

The purification and concentration of orange juice are crucial to remove undesirable materials, such as pectin, which is responsible for juice clouds; or limonene, which is responsible for bitter taste. Membrane-based juice clarification is preferred due to its capability to separate specific targeted molecules, while still maintaining the clarifie...

Pectin is commonly used in the food and beverage industry. It is naturally found in most fruits biomass. Biomass residue from the processed-fruit industry is very potential as a source material for pectin and pectin-based products, such as residue from the pineapple industry. This study aimed to extract and characterize pectin which obtained from t...

Membrane technology provides advantages for separating and purifying food materials, including juice clarification. Ultrafiltration processes for fruit juices aim to remove haze components and maintain the stabilization of the juices. However, the membrane process during the clarification of fruit juices suffers from fouling, which deteriorates the...

Semipermeable membranes are generally synthesized using solvents which harm the environment and human health. Common organic solvents like n-methyl-2-pyrrolidone (NMP), dimethylformamide (DMF), dimethylacetamide (DMA), and dimethyl sulfoxide (DMSO) have been proven to cause damages to the environment and the human body. Therefore, finding environme...

p>Teknologi membran merupakan teknologi yang dapat memisahkan dua fasa (permeat dan umpan). Kendala dalam teknologi membran yaitu bahan yang terkandung dalam umpan dan mengakibatkan terjadinya fouling (penutupan pori). Salah satu alternatif untuk mengurangi fouling yaitu menambahkan zat antibiofouling pada membran. Bahan yang dapat digunakan sebaga...

A considerable hindrance in application of ultrafiltration membranes for aqueous application is an occurring fouling which promotes deterioration of the membrane separation processes. Natural Olea europaea leaves extract nanosolids embed in cellulose acetate polymer matrix to enhance anti-biofouling properties of ultrafiltration membrane. Olea euro...

Farming patterns for urban residents to cultivate crops is a difficult thing to do because of limited land. Currently, the pattern of building residents of the city is apartments and minimalist housing where residents have a narrow land area, critical landconditions and limited amount of water. Therefore, a solution is needed so that city residents...

Polyphenols are widely used as antioxidant agents to protect human health. Resveratrol, kaempferol, and quercetin have been reported to have potent antioxidant activity; however, these compounds have many problems related to their practical application, such as instability and insolubility. Thus, a nanostructured lipid carrier (NLC) was utilized as...

Irrigation and fertilization technologies need to be adapted to climate change and provided as effectively and efficiently as possible. The current study proposed pocket fertigation, an innovative new idea in providing irrigation water and fertilization by using a porous material in the form of a ring/disc inserted surrounding the plant’s roots as...

Reusing water and excess detergent from the laundry industry has become an attractive method to combat water shortages. Membrane filtration is considered an advanced technique and highly attractive due to its excellent advantages. However, the conventional membrane filtration method suffers from membrane fouling, which restricts its performance and...

Inorganic–organic composite membranes (IOCMs) are an alternative separation method developed for their straightforward process, economic benefits, and ease of scaling up. The IOCMs in this study were prepared from a biopolymer chitosan matrix and rice husk-based silica filler to remove impurities from crude biodiesel. The IOCMs were prepared throug...

The bioactive functions of oligosaccharides from human milk have been reported by many studies. Many of oligosaccharides isolated from colostrum and/or milk of dairy animals have been reported to have similar chemical structures with those in human colostrum and/or milk. It has been proved by several studies that the oligosaccharides with similar c...

Membrane distillation crystallization (MDC) is a promising hybrid separation technology that can play an important role in desalination, mineral recovery from liquid solution as well as in carbon dioxide fixation. MDC combines membrane distillation and crystallizer into one integrated unit that allows excellent recovery of clean water and high puri...

Abstract: Marine-derived biowaste increment is enormous, yet could be converted into valuable biomaterial, e.g., hydroxyapatite-based bioceramic. Bioceramic material possesses superiority in terms of thermal, chemical, and mechanical properties. Bioceramic material also has a high level of biocompatibility when projected into biological tissues. Tu...

The rise in energy consumption is largely driven by the growth of population. The supply of energy to meet that demand can be fulfilled by slowly introducing energy from renewable resources. The fluctuating nature of the renewable energy production (i.e., affected by weather such as wind, sun light, etc.), necessitates the increasing demand in deve...

Developing countries, such as Indonesia, has abundance of water resources, either fresh and salty water. However, improved drinking water is still uneasy to access. While centralized water treatment facilities do not provide a ready use drinking water due to expensive cost and extensive on-site process or distribution system, bottled water generall...

The ultrafiltration membrane process is widely used for fruit juice clarification, yet the occurring of fouling promotes a decline in process efficiency. To reduce the fouling potential in the membrane application in food processing, the use of natural phenolic compounds extracted from cocoa pod husk is investigated. The cocoa pod husk extract (CPH...

The development of membrane technology is rapidly increasing due to its numerous advantages, including its ease of use, chemical resistant properties, reduced energy consumption, and limited need for chemical additives. Polyurethane membranes (PUM) are a particular type of membrane filter, synthesized using natural organic materials containing hydr...

Membrane fouling remains a major obstacle in liquid-based membrane processes, which restricts widespread applications of membrane-based processes. Approaches for membrane fouling control have been reported, including development of spacers. Typically, a spacer is required to provide a flow channel for the feed and permeate, to induce local mixing,...

A rotating biological contactor (RBC) offers a low energy footprint but suffers from performance instability, making it less popular for domestic wastewater treatment. This paper presents a study on an RBC integrated with membrane technology in which membrane filtration was used as a post-treatment step (RBC–ME) to achieve enhanced biological perfo...

Pasteurisasi akan merusak kualitas madu seperti kadar gula pereduksi dan sifat fisik madu karena panas sensible yang tertahan dalam madu. Oleh karena itu, dilakukan pengujian pengaruh pendinginan pada madu setelah proses pasteurisasi dengan alat vacuum cooling. Pada industri pengolah madu yang telah menggunakan vacuum cooling, saat melakukan proses...

Butterfly-pea ( Clitoria ternatea ) flowers are containing various active compounds such as flavonoids, myricetin, quercetin, flavonols, and anthocyanins which have potential as antioxidants. Dried butterfly-pea flower is often used as an ingredient of herbal tea drinks. The drying procedure for the butterfly-pea flower is important to maintain the...

This study aimed to analyse the effect of carbonisation temperature and type of activating agent which were best to be used in the chemical activation process in the manufacture of activated carbon from oil palm empty fruit bunches (EFB). The process of making activated carbon consisted of three stages, i.e. dehydration, carbonisation, and activati...

Cabya ( Piper retrofractum Vahl.) is a herbal plant that is widely used as an androgenic, antioxidant, and anticancer agent. Preservation of cabya in dry form is mostly carried out in red-colour only, while green-colour and orange-colour are rarely preserved by this method. The present study aimed to analyze the water content and the drying rate of...

Rajungan (Portunus pelagicus) merupakan salah satu hewan laut yang banyak terdapat di perairan Indonesia. Limbah cangkang rajungan memiliki kadar protein (32,95%), serat kasar (10,89%), kalsium (22,93%), dan fosfor (0,78%). Kandungan kalsium yang tinggi membuat cangkang rajungan dapat diolah untuk mendapatkan senyawa hidroksiapatit, yang bisa diper...

A forward osmosis (FO) membrane was developed from a mixture of chitosan and Dioscorea hispida starch, cross-linked using glutaraldehyde. The cross-linked chitosan/starch membrane was revealed to have high mechanical properties with an asymmetric structure. The prepared membrane’s performance was investigated as an FO filter assembled in a polyprop...

Membranes were used in many aqueous applications, including in food processing, e.g., clarification of fruit juices. Typical drawbacks of membrane processes are membrane fouling, which promotes deterioration of processed products. During application of membranes for fruit juice clarification, biofouling occurred as the process deals with food subst...

Forward osmosis technology is promising molecular separation processes employing osmotic pressure difference of two phases separated by a membrane. Membrane for forward osmosis application has a semipermeable property which selectively passes the certain molecules while reject others. Cellulose triacetate and cellulose acetate are common polymers t...

Since the widespread of severe acute respiratory syndrome of coronavirus 2 (SARS-CoV-2) disease, the utilization of face masks has become omnipresent all over the world. Face masks are believed to contribute to an adequate protection against respiratory infections spread through micro-droplets among the infected person to non-infected others. Howev...

Standalone membrane distillation (MD) and forward osmosis (FO) have been considered as promising technologies for produced water treatment. However, standalone MD is still vulnerable to membrane-wetting and scaling problems, while the standalone FO is energy-intensive, since it requires the recovery of the draw solution (DS). Thus, the idea of coup...

Dual‐layer hollow fiber (DLHF) micro‐tubular solid oxide fuel cell (MT‐SOFC) consisting of nickel oxide‐yttria‐stabilized zirconia (NiO‐YSZ) anode/YSZ electrolyte was fabricated via a single‐step phase inversion‐based co‐extrusion/co‐sintering technique in order to investigate the effect of different electrolyte extrusion rates (1‐5 mL min−1) at di...

The crab (Portunus pelagicus) shell is a marine biowaste produced by seafood industries. Traditionally, crab shells were collected to be converted into animal feed, however many of them are disposed of as industrial waste. A conversion of crab shells into hydroxyapatite is a better option for producing high-value biomaterial. Hydroxyapatite materia...

The mixed matrix membrane has been developed in this work by using cellulose acetate as a membrane matrix and garlic-based phenolic nanopowder as an anti-biofouling filler. The membrane prepared using the phase inversion method, utilizing dimethylformamide (DMF) as a solvent. Three variation of garlic extract (GE) nanopowder concentration of 0.5%,...

Integrated fixed-film activated sludge (IFAS) process is considered as one of the leading-edge processes that provides a sustainable solution for wastewater treatment. IFAS was introduced as an advancement of the moving bed biofilm reactor by integrating the attached and the suspended growth systems. IFAS offers advantages over the conventional act...

The education and health sectors are placed in the top position of Indonesian goverment priority scales, since both have positive relationship and should be developed together. Education and health sector collaboration actually creates a health awareness for children as early as possible, which starts at the age of primary school. Unfortunately, th...

Polyhydroxyalkanoate (PHA) is a biopolymer produced by various types of bacteria under conditions of unbalanced growth. One of the bacteria generating PHA is Pseudomonas fluorescens with a carbon source in the form of molasses. This study aim ed to determine the effect of molasses concentration and incubation period on biomass and PHA characteristi...

Tamarillo ( Solanum betaceum ) contains phenol compounds which can be used as antibacterial, these compounds can be obtained from the extraction process. Microwave assisted extraction (MAE) can accelerate the extraction process by utilizing microwave heating. The aim of this research is to find the optimum point of solvent ratio and extraction time...

A petroleum refinery heavily depends on crude oil as its main feedstock to produce liquid fuels and chemicals. In the long term, this unyielding dependency is threatened by the depletion of the crude oil reserve. However, in the short term, its price highly fluctuates due to various factors, such as regional and global security instability causing...

PAPER • OPEN ACCESS Feasibility study on the use of UV/Vis spectroscopy to measure total phenolic compound and pH in apple (Malus sylvestris L.) cv. Manalagi Abstract. This paper will report the feasibility study on the use of UV/Vis spectroscopy to determine apple quality based on Total Phenolic Compound (TPC) and pH. To achieve the conclusion, se...

Fermented seed of the tropical tree Pangium edule Reinw., locally known as Keluwak , have been used as spices in Asian and especially Indonesia cuisine. For further processing and postharvest handling, physical and mechanical properties of the seed are needed. Some physical properties, i.e. length, width, thickness, geometric mean diameter, spheric...

A newly developed green ultrafiltration membrane has been successfully made by utilizing natural antibiofoulant impregnated cellulose acetate mixed matrix membranes. The extract impregnated into cellulose acetate polymer to form mixed matrix membranes with higher and foodgrade antibiofouling properties. In order to evaluate mixed matrix membrane ma...

Ammonium sulfate (ZA) and nitrogen-phosphorus-potassium compound (NPK) are nitrogen-rich fertilisers commonly used by farmers. The fertilisers have high solubility in water, decay rapidly in wet soil and decompose into ammonia. Its lead into eutrophication phenomena and its absorption by crop roots becomes less effective. A facile and scalable meth...

Cocoa pod husk (CPH) which is a waste of cocoa plantation contains phenolic compounds which can be used as antibacterial agents. Phenolic compounds in CPH include phenolic acids, flavonoids and flavones. The aim of this study was to analyze the antibacterial activity of CPH extract whis was extracted by using Microwave-Assisted Extraction (MAE) met...

One solution to the problem of energy that can be used as a substitute for fuel oil is biodiesel. Palm oil can be used as biodiesel raw material. The advantage of palm oil is its sustainable availability. However, the water content of palm oil still cannot meet the biodiesel quality requirements based on ASTM D975-08a and ASTM D6751-12 which is les...

Dalam penelitian ini, proses hidrolisis digunakan untuk mendegradasi hemiselulosa menjadi xilosa dengan menggunakan asam sulfat (H 2 SO 4 ) sebagai katalisnya. Bahan utama yang digunakan adalah kulit pisang Ambon Hong ( Musa acuminata ) yang sudah matang. Proses hidrolisis berlangsung pada suhu 121 0 C menggunakan autoclave . Penelitian ini menggun...

Bawang putih mengandung beberapa zat yang bermanfaat bagi kesehatan manusia, salah satunya yaitu senyawa fenol. Senyawa fenol pada bawang putih memiliki peranan penting sebagai zat antibakteri yang dapat diproses selanjutnya sebagai agen antibiofouling membran. Metode ekstraksi yang tepat seperti kombinasi Microwave-Assisted Extraction (MAE) dan ma...

Microalgae biomass gains interests for its promising sustainability as feed-stock in biofuels production. However, high-energy cost for biomass cultivation and harvesting must substantially be reduced to enhance its viability. This study evaluates the application of standalone forward osmosis (FO) and aeration as fouling control for Chlorella vulga...

Nowadays the world is facing vulnerability problems related to food, energy and water demands. The challenges in those subsystems are intertwined and thus require inter-discipline approaches to address them. Bioresources offer promising solutions of the dilemma. Microalgae biomass is expected to become a superfood and a favorable energy feedstock a...

Pengolahan limbah ampas teh menjadi bahan bakar alternatif berupa biobriket yaitu dengan membakar ampas teh kering secara dengan sedikit udara untuk dijadikan arang yang kemudian dicetak menjadi briket. Penggunan tepung tapioka sebagai perekat disebabkan sifatnya lebih tahan dalam penyimpanan, lebih mudah didistribusikan karena praktis, ringan, dan...

Membranes were used in many aqueous applications, including in food processing, e.g. clarification of fruit juices. Typical drawbacks of membrane processes are membrane fouling which promotes deterioration of process products. During application of membranes for fruit juice clarification, biofouling occured as the process deals with food subtances....