Sri Yuliani

• PhD
• National Research and Innovation Agency

It was investigated whether shellac nanoemulsion coating might preserve the internal quality of chicken eggs and increase their shelf life. Using a high energy approach with an ultraturrax set at 16,000 rpm, shellac, purified water, tween 80, and biosilica were emulsified. A total of 120 chicken eggs were divided into 4 groups: 1) uncoated (control...

Lipid nanoemulsion is an effective system for improving or extending the functional performance of a composite coating or film since the small particle size causes the lipids to be evenly dispersed into the matrix. This study aimed to examine the effect of the ratio of BW: OA and the concentration of Tween 80 on the physical characteristics of the...

Hydrophobic surface modification has great potential for applications in everyday life, particularly in textiles such as sportswear, health, protection, and other non-clothing textiles. Improving water repellence and high-level hydrophobicity in textile materials has so far been difficult to achieve with chemicals other than PFAS (per-and polyfluor...

Understanding the interaction between the equilibrium moisture content of a product and the surrounding air is crucial for guaranteeing product quality and preserving its characteristics throughout storage. The study of this tendency may be conducted utilizing sorption isotherms. This research aimed to study the moisture sorption characteristics of...

The suitability of carrier materials for the entrapment of bacteria is an important factor in developing biofertilizers as it determines their functional properties during use and storage. This study examines the microscopic structure and entrapment properties of several potential carriers for biofertilizers. The carriers studied included rice stra...

Pretreatments and extraction conditions can affect the yield and characteristics of biogenic silica (biosilica) from palm oil fuel ash (POFA). This study aimed to examine how reashing pretreatment and varying NaOH concentrations influence the yield and properties of biosilica extracted from POFA by a simple sol-gel method. Re-ashing pretreatment wa...

Early spoilage is a challenge that is often encountered in fresh food. One prevention that can be done is by using packaging technology. There has been an increasing interest in using smart detector packaging for fresh products. Smart detector has high sensitivity and is responsive to visual changes when exposed to pH, temperature, water activity,...

Exploration to utilize breadfruit ( Artocarpus altilis ) starch as stabilizer in food emulsion is increasing significantly. Breadfruit starch modification using octenyl succinic anhydride (OSA) has successfully investigated, however some methods are rarely been applied for breadfruit starch. Therefore, this research aimed to examine the ability of...

Fresh ginger can spoil quickly owing to a variety of factors, including inappropriate postharvest handling, microbial and enzymatic activities, and chemical reactions during storage. This study evaluated the physicochemical properties of ginger coated with chitosan and beeswax during storage for 6 months at different temperatures (18°C and 25°C). F...

Natural pesticides are commonly used active ingredients that are naturally non-chemical synthetic. The present work was to evaluate the changes in the quality of natural biopesticides formulated from rice husk liquid smoke during storage for 6 months. The formulation of biopesticide was carried out in the form of emulsified concentrate (EC) has 3 f...

Mangosteen (Garcinia mangostana L.) has become the main agricultural products contributing to the largest annual foreign exchange from the fruit category. Mangosteen rind contains xanthone compounds as a source of antioxidants, with α-mangostin and γ-mangostin, as the main components which are used as traditional and modern ingredients to treat var...

Application of different forms of silicon sources may influence rice production and quality. It is believed that properties of nanosized particles may differ significantly from those of the original bulk material. This study aimed to investigate effects of application of silica nanoparticles extracted from rice husk ash, called nanobiosilica (NBS),...

. Some biopolymer materials can be used as filler to increase the slow release capacity of the active component. Technology modification of biopesticide production processes to increase its slow release capacity can use sodium alginate, maltodextrin and CMC (Carboxy Methyl Celluose). The purpose of this research activity was to modify the formulati...

Nanoemulsions are gaining considerable interest for use in delivery of essential oil-based pesticides. Evaluation in the laboratory have shown promising efficacy of nanobiopesticides, and further development in nanoemulsion production at larger scale is needed for a wider application in the field. This study aimed to evaluate the changes in droplet...

High-quality seed is always demanded by farmers and may result in up to a 30% increase in crop yields. One of the major constraints ofsoybean cultivation is that soybean seeds quickly deteriorate in storage due to high lipid and protein content. Coating technology withvarious coating formulas is needed to extend seeds’ shelf life. This research aim...

The physical stability of a whey protein (WP)-stabilized red palm oil (RPO) emulsion as affected by the type and concentration of WP used was evaluated by monitoring the changes in its droplet characteristics after storage and accelerated testing. Emulsions containing 30% (v/v) RPO were stabilized by WP isolate 90 (WPI), WP concentrate 80 (WPC80),...

Manggis merupakan salah satu hasil pertanian utama penyumbang devisa tahunan terbesar dari buah-buahan. Manggis menempati urutan pertama ekspor buah segar nasional ke mancanegara. Kulit buah manggis mengandung senyawa aktif yang disebut xanthone yang didapat melalui berbagai metode ekstraksi. Perbedaan metode ekstraksi berpengaruh terhadap kualitas...

The objective of this study was to investigate into the physical stability of whey protein (WP)-stabilized red palm oil (RPO) emulsions based on rheological properties such flow behaviour, viscoelastic properties, apparent viscosity (ηapp), and linear viscoelastic range limits (LVE). RPO emulsification was stabilized by three types WP with differen...

p>The increasing awareness of healthy living among consumers encourages producers to increase the availability of quality fresh fruits and vegetables without preservatives. Fruits and vegetables are perishable products because they have high water content. In addition, after harvesting, fruits and vegetables are still undergoing the process of resp...

Eucalyptol (1,8-cineole) compound contained in eucalyptus oil has the potential to inhibit viral infection pathways, as an antimicrobial and as an immunoregulator. Therefore, the development of eucalyptus oil-based effervescent health drinks is urgently needed to relieve the symptoms of being infected a virus during this pandemic. However, the vola...

Mint oil has many applications including foods, perfumes and fragrances, pharmaceuticals, cosmetics and pest control. This essential oil is easily damaged because of its high sensitivity to environmental conditions such as heat, oxygen, light and reactions with other compounds. Encapsulation provides protection of the oil against these undesirable...

Eucalyptus citriodora oil is an essential oil that contains volatile active compounds. To slow down the process of releasing such volatile compounds, a binding agent such as a polymer matrix is needed. This research aimed to prepare and characterize the properties of Eucalyptus citriodora oil encapsulated in polymer matrices. Development of nanoenc...

Tempeh is a fermented soybean-based food that has long been an important protein source in Indonesia. In this study, tempeh was made from several varieties of soybeans to evaluate the differences in the characteristics of the tempeh produced. The soybean varieties used consisted of Anjasmoro, Grobogan, Dena, Dega and Biosoy, as well as imported soy...

Silica (SiO 2 ) can be extracted from rice husks and has biodegradable properties. However, the rice husk extraction process using the sol-gel technique generates low-purity silica, making them non-compliant as a filler material on the rubber finished goods industry. This study aimed to improve the characteristics of silica particles extracted from...

The rodent tuber mutant plant (Typhonium flagelliforme) has anticancer properties. This plant contains several bioactive compounds such as hexadecanoic acid, alpha-tocopherol, octadecanoic acid, stigmasterol, and eicosane. However, the utilization of rodent tuber mutant plant extract as a functional food is not optimal yet. One of the things that n...

Soybean for tempeh preparation is generally peeled by wet milling of cooked soybean seeds. This technique is time consuming and requires a lot of water. Instead, peeling can be done by dry milling prior to cooking to save processing time and water usage. This research aims to evaluate the characteristics of tempeh prepared from local Indonesian soy...

Biosilica from rice husks has a potential that can be used as a reinforcing filler in the production of rubber finished goods displace mine silica. But it’s difficult to disperse homogenetically into a rubber finished goods, so it needs to modify the surface using a coupling agent sign. The capacity for the production of modified-biosilica would ne...

Nanofibrils are nano-sized fibers. One of the materials that can be used to make nanofibrils is whey protein isolate. Nanofibrils can be formed by heating whey protein isolate at a certain temperature and for a certain duration. This study examines the effect of heating temperature and heating time on the formation of nanofibrils. WPI was formed in...

Silica extracted from rice husk (silica nanoparticles, Si-NP RHA) has great potential for industrial use, particularly as filler in the rubber industry. However, silica is poorly dispersed in the matrix and needs to be modified by a silane linking agent (bis-(3-triethoxysilylpropyl) tetrasulfane (TESPT)) to improve its mixing properties. As a resul...

The synthesis of silica particles from rice husk is a research based on natural materials and is classified as green material. Preparation of biosilica catalyst from calcined rice husk ash was carried out by the hydrothermal method using rice husk ash mixed with NaOH solution at a ratio of 1:5 (w/v) with the reaction temperature of 110-120°C, the p...

Rice husk is an abundant and underutilized agricultural by-product in Indonesia. The silica contained in the waste could be used as a substitute natural silica for various purposes. The extraction of silica from rice husk (RH) has been done using the sol-gel method without involving high energy. Extraction was carried out with KOH at concentrations...

Liquid smoke from rice hull has the potential to be developed as a natural pesticide, because of its contents of chemical compounds which is good for controlling insects. The purpose of this research was to find out the best formula from liquid rice hull smoke to control brown planthopper. The methodology used through several stages of activities,...

Tapioca can be modified by using chemicals or other additives. One of the opportunities to alter and improve starch hydrophobicity quality is by adding acetic acid and coconut oil. This research activity aims to change cassava starch or tapioca and carry out the resulting product’s physicochemical characterization. The production method is carried...

Nano-biosilica extracted from rice husk, an abundant by-product of rice milling, has many potential applications in industry. However, the high amount of hydroxyl group in silica make it easy to adsorb moisture and form aggregates that are difficult to distribute in the hydrophobic matrices. This research aimed to modify the surface of nano-biosili...

Biodiesel from palm oil is a promising renewable fuel for substitute petro-diesel either be used directly or as a diesel mixture. To improve reaction rate and biodiesel yield, adding a catalyst with excess alcohol is needed in transesterification process. The high content of silica in rice husks is very prospective for the development of a heteroge...

Nanobiosilica constitutes a product from rice husk ash processing. Silica has been prepared through alkaline extraction and precipitates separation processes. During the processing of nano biosilica, a considerable amount of residue was formed, this by-product must be utilised. From the mass balance of rice husk ash extraction, 90% silica from rice...

Multilayer microcapsules are micro-sized capsules composed of several layers. Multilayer microcascules can be made from Soy Protein Isolate (SPI) nanofibrils using the Layer by Layer (LbL) method. The thickness of the microcapsule layer is one of the physical characteristics that need to be studied for the application of multilayer microcapsules in...

Iodine Deficiency Disorders (IDD) is a major public health problem in several areas of the world, especially in developing countries. Iodine deficiency can cause goitre, cretinism, decrease of intelligence, mental retardation, brain damage, deaf-mutism, and cause miscarriage in pregnant women and stillbirth as well. The purpose of this research was...

p> Plant extracts as a botanical insecticide can be used in either single or mixture forms. Mixed extracts have advantages: reducing dependence on one plant species, being the synergistic effect which can increase the effectiveness of formulas, and reducing the possibility of resistance emergence. This study aimed to obtain compatible and synergist...

Synthetic insecticides are used to control Helopeltis antonii, one of the important pests of cacao and other agricultural crops. The intensive and excessive use of insecticides cause insect resistance, health problems, and environmental hazards. Therefore, environmentally friendly alternative control strategies need to be developed, such as the dev...

p> Black pod disease caused by Phytophthora palmivora is a significant disease on cocoa crops worldwide. Citronella and geraniol are two dominant substances of citronella oil that have fungicidal activity, which is potentially used to control black pod disease. However, those two substances are relatively unstable form volatile. To improve stabilit...

Nanofibril is a bio material in the form of fibrils and nano-sized. These fibrils can be made from protein; one of them is soy protein isolate (SPI). Nanofibrils can be used in the fields of food and medicine, for example, shells of microcapsules, food thickener, and food texture makers. To utilize this nanofibril need to know the characteristics o...

Plant Growth Promoting Rhizobacteria (PGPR) plus manure technology is designed to control the vascular streak dieback disease (VSD) which attacks cocoa plants, and improve the plant growth. This research aims to compare the cost of using conventional manure and PGPR plus manure technology. This research was designed in a descriptive quantitative ap...

Typhonium flagelliforme Lodd. is well known as rodent tuber herbal plant has been successfully irradiated by using gamma rays irradiation technique to increase the bioactive compounds. Despite the potential of rodent tuber mutant plants, the idea came up to develop functional food formulations into nanoemulsion systems. Nanoemulsion composed of ext...

p>The mosaic disease declines production and oil quality of patchouli. Antiviral-based citronella oil has been formulated using a spontaneous emulsification technique (nanotechnology). The previous result of the greenhouse trial showed the formula at 1-1.5 % concentrations suppressed the development of virus of about 82.5 %. The field-scale tests i...

Previous in vitro studies showed that nanoparticle extract of turmeric, zedoary, and garlic exhibit antibacterial activity against Mycoplasma gallisepticum (M. gallisepticum ) which causes chronic respiratory disease (CRD) in chicken. This research aimed to determine the antibacterial activity of nanoparticles of Curcuma longa , Curcuma zedoaria ,...

Chitosan-based films showed good gel formation capability and gas permeability (CO2 and O2). However, the high permeability of water vapor limits the application of chitosan as a single coating material. Additionally, single chitosan film was also brittle, so the addition of lipid and metal nanoparticles were chosen to solve this problem. This rese...

Nanofibrils are nano-sized fibrils made from protein isolates. To make the nanofibrils that protein isolate solution was heated in a water bath at 80 C while stirring for more 16 h. This nanofibril formation process requires a water bath that can heat and stir protein isolates. So far there have been a lot of stirrers and water baths, but those tha...

Development of nanoemulsion is gaining considerable attention for use in delivering hydrophobic constituents such as clove oil in foods and agriculture system. The small size of the oil droplets in the nanoemulsion system offers many advantages such as high stability, optical clarity, and improved water solubility and bioactivity. This research was...

Despite the high production rate of Indonesian exotic fruits, the export rate has not been as high as desired. One of the main problems in exporting fresh fruits is the control of shelf-life during transportation and distribution. The use of active packaging has been reported to overcome this problem. Bioplastic bags are potential for this purpose,...

Oil palm empty fruit bunches (OPEFB) have high cellulose content, that is equal to 35.66%-57.75%wt. This research aims to convert cellulose fibre from OPEFB into advance biomaterial such as micro and nanofibrilated cellulose through peracetic acid delignification and enzyme hydrolysis. Peracetic acid (PAA) is a strong oxidizer which has been used b...

Degreening is a transformation process on peel which enables it to change color from green to orange on citrus fruits. The orange color of the peel comes from the mixture of carotenoid pigments, such as β-cryptoxanthin and β-citraurin. The pigments contributed in the formation of β-citraurin are β-cryptoxanthin and zeaxanthin. The objectives of thi...

Fresh-cut mango is one of perishable food products due to its high respiration, transpiration and microbial decay rate. In this study, generation of a new edible coating was chosen as an alternative method for preserving the quality attributes of fresh-cut mango. The objective of this study was to evaluate the effects of nanocomposite edible coatin...

Development of nano‐structured food delivery systems containing essential oils are finding growing interest due to their unique physicochemical and potential functional properties such as high stability, optical transparency, and improved bioactivity. Cinnamon oil of bark of Cinnamomum burmannii was formulated into nanoemulsion systems and their ch...

Bionanocomposite consists of natural polymers and the filler of nanoparticles. The aim of this study was to evaluate the effect of zinc oxide (ZnO) nanoparticles (ZnO-NP) and stearic acid on characteristics of cassava starch (CS)-based bionanocomposite edible films. The experiment had 3x2 factorial experiment design (ZnO-NP: 0, 1, 2% and stearic ac...

Flow behavior of Soy Protein Isolate (SPI) suspension and Whey Protein Isolate (WPI) solution at pH 2.0 under various heating times were studied using steady shear viscosity measurements. Shear rate sweeps with increasing shear rates (up ramp) was performed to investigate the structural breakdown of the proteins during shearing. Down ramp shear rat...

Starch from sweet potato is widely used in foods product. However, in general native sweet potato starch has constrains that often inhibits its application in food products and hydrothermal modification might overcome the problem. This study aimed to study the effect of hydrothermal treatment on the physi-cochemical and functional characteristics o...

Nanofibrils were formed from soy protein isolate (SPI), which was isolated from black soybean, and commercial SPI by heating 2% w/w SPI suspensions at pH 2 and 80°C for 16 h. Nanofibrils from both types of SPI have branches and curvy structures with diameters between 10 and 20 nm. These fibrils, together with high methoxyl pectin (HMP), were used t...

More than 2 billion people in the world today suffer from micronutrient deficiencies caused largely by a dietary efficiency of vitamins and minerals. The public health importance of these deficiencies lies upon their magnitude and their health consequences, especially in pregnant women and young children, as they affect fetal and child growth, cogn...

Ada banyak teknologi untuk meningkatkan umur simpan rambutan, yang merupakan buah non klimakterik, antara lain teknik EMAP (Equillibrium Modified Atmosphere Packaging) dan teknik CA (Controlled Atmosphere). Percobaan laboratorium menggunakan teknik EMAP pada rambutan cv. Binjai dan Lebak Bulus dilakukan dengan menggunakan 4 tingkat jumlah lubang pa...

This chapter highlights composition, processing, and quality aspects of various herbs and spices. There is a growing interest in herbs and spices for food, pharmaceutical, or cosmetic applications in proportion to the rising global demand for natural products. The herbs and spices are rich in volatile essential oils giving pleasant aromas. They may...

The disease of Vascular streak dieback (VSD) is a deadly disease of cocoa plants, because it attacks the vascular tissue of cocoa at growing point of the plant. In West Sumatra the disease was first reported in 2015 with an incidence of disease range 58.82% - 100% and an intensity of disease range 24.29% - 44.7%. The purpose of this study was to ex...

Degreening, a transformation process of green color on citrus peel to be orange color on tropical low-land citrus fruits often fails. Orange color of the citrus peel comes from the mixture carotenoid pigments, such as zeaxanthine and mainly β-cryptoxanthin and β-citraurin. The accumulation of β-citraurin occurs when the fruits are exposed to low te...

Citrus peel color is one of the main quality attributes which was caused by the accumulation of carotenoids and its derivatives, especially β-citraurine. It makes citrus peel color looks attractive (orange). The orange color is a mixture of β-cryptoxanthin with β-citraurin. The objectives of this study were (1) to observe the effect of precooling a...

Potwirus con reduce the production oJ fresh ond dry biomoss of patchouli by 35% and 47%, respectively. The essential oils, such os citronella, hove a potentiol os ontiphytovirol ond suppress the development o, Potyvirus cousing mosaic disease on potchouli. Antiphytovirol octivities ol essential oils con be improved by modifying them into nonopartic...

Soy protein isolate (SPI) was isolated from Indonesian soybean var. Grobogan and converted into protein nanofibrils. Their functionalities as a food thickener and building blocks for microcapsules were investigated and compared with those of commercial whey protein isolate (WPI). The isolation yield was about 58% with SPI’s protein content of about...

p>Minyak biji pala mengandung senyawa bioaktif yang memiliki aktivitas antimikroba. Senyawa bioaktif umumnya bersifat tidak stabil sehingga mudah mengalami penurunan aktivitas biologisnya. Salah satu cara untuk meningkatkan stabilitasnya adalah dengan menggunakan teknologi nano. Penelitian ini bertujuan untuk (1) mendapatkan formulasi nanoemulsi mi...

p>Sirih merah merupakan salah satu tanaman obat yang dapat dimanfaatkan sebagai minuman fungsional, karena mengandung senyawa fitokimia dari golongan alkaloid, flavonoid, dan tanin yang berkhasiat sebagai antihiperglikemik dan antioksidan. Salah satu kelemahan dalam penyerapan bahan aktif adalah bioavaibilitasnya yang rendah. Salah satu teknologi y...

Optimasi formula brownies berbasis tepung talas Banten (Xanthosoma undipes K. Koch) telah dilakukan dengan menggunakan desain mixture simplex lattice dari Response Surface Methodology (RSM). Pengaruh komposisi formula dari tepung talas Banten kisaran 70-100% dan maizena kisaran 0-30% terhadap karakteristik tekstur dan organoleptik Brownies dipelaja...

Zeolite is high porous natural mining material and usually used as absorber. Particle size reduction of zeolite to nano-sized is expected improve absorption, because with the smaller particle size of materials, uptake extensive areas will increase. Nano zeolite-KMnO4 as ethylene absorber is expected better than existing commercial ethylene absorber...

Nano-emulsification of citronella oil using spontaneous diffusion and phase inversion techniques Sri Yuliani1 and Rita Noveriza2 1Indonesian Center for Agricultural Postharvest Research and Development, Bogor, Indonesia 2Research Institute for Spices and Medicinal Crops, Bogor, Indonesia The use of natural ingredient for food control gain consid...

Recently, researches on nanotechnology have been developed very rapid, as well as the utilization of nanozeolites. Nano-sized material has several advantages which are expanding absorptive surfaces so it will enhance the material absorption and shorten the absorption time. Zeolite as a KMnO4 binder, has been widely recognized for its ability to ext...

Research on the use of low energy nano technology on black cumin is still limited. Encapsulation of black cumin extract nanoemulsion has been developed and the products have been characterized. The aims of this study were to determine the extraction method of the black cumin seed, produce black cumin extract nanoemulsion by spontaneous emulsificati...

p>ABSTRAK Minyak sawit merah (Red palm oil/RPO) dan β-karoten tidak larut dalam air sehingga sulit diaplikasikan ke dalam produk pangan. Salah satu pendekatan untuk meningkatkan kelarutan RPO dan β-karoten adalah emulsifikasi. Penelitian ini bertujuan untuk mendapatkan nanoemulsi RPO diperkaya β-karoten yang stabil. Penelitian dilaksanakan di Labor...

The production of fatty acid methyl ester (FAME) by direct in situ alkaline-catalyzed transesterification of the triglycerides (TG) in Jatropha curcas seeds was examined. The experimental results showed that the amount of Jatropha curcas seed oil dissolved in methanol was approximately 83% of the total oil and the conversion of this oil could achie...

Culinary powders are unique food powders as they have specific functionalities and are consumed both in raw powder and cooked form. This chapter reviews development of culinary powders with particular discussion on spice and herb products, salts and soup powders. The chapter discusses preparation and manufacturing processes, packaging and storage a...

This paper presents the study of transesterification of Jatropha curcas oil (JCO) via environmentally benign process using calcium oxide as heterogeneous catalyst. Response surface methodology (RSM) based on central composite design (CCD) was performed to optimize three reaction variables in this study. The transesterification process variables wer...

This research studied the moisture sorption behaviour of jatropha seed allowing the development of a model correlating the equilibrium moisture content (EMC) and the free fatty acids (FFA) content as a function of water activity and EMC, respectively. Two sets of sorption-isotherm experiment were performed to describe the relationship between EMC a...

Folic acid is a common form of folate used for food fortification to prevent the incidence of neural birth defects among others. However, 5-methyltetrahydrofolic acid (5-MTHF) is considered, a better alternative to folic acid and is less likely to mask the symptoms of B12 deficiency in older populations. Also it is less bioavailable, and present in...

ABSTRAK Kegiatan penelitian ini bertujuan untuk mempelajari proses produksi biodiesel secara langsung dari biji jarak melalui proses transesterifikasi in situ. Parameter kondisi proses yang dipelajari adalah pengaruh kadar air (0,5, 2, 3 dan 4 %) dan ukuran partikel bahan (10, 20 dan 35 mesh) terhadap rendemen biodiesel dan kualitasnya. Kadar air d...

High temperature, shear and pressure during extrusion can cause a considerable loss of flavour volatiles added in the feed material due to thermal degradation, oxidation, polymerisation or flash distillation. Encapsulating the flavour before extrusion is a promising approach to improve the flavour volatiles’ retention during extrusion. β-Cyclodextr...