Widiastuti Setyaningsih

Widiastuti Setyaningsih
Universitas Gadjah Mada | UGM · Department of Food and Agricultural Product Technology

European Doctor of Science

About

81
Publications
17,845
Reads
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525
Citations
Additional affiliations
January 2012 - present
Universitas Gadjah Mada
Position
  • Lecturer
Education
September 2011 - June 2017
Universidad de Cádiz
Field of study
  • Analytical Chemistry
March 2011 - July 2011
Universidad de Cádiz
Field of study
  • Quality in Analytical Laboratories
October 2010 - February 2011
University of Barcelona
Field of study
  • Quality in Analytical Laboratories

Publications

Publications (81)
Article
An analytical pressurized liquid extraction (PLE) process has been studied for the extraction of phenolic compounds from rice grains. A fractional factorial design (27−2) with a centre point was used to optimize PLE parameters such as solvent composition (EtOAc in MeOH), extraction temperature, pressure, flushing, static extraction time, solvent-pu...
Article
An analytical ultrasound-assisted extraction (UAE) technique has been optimized and validated for the extraction of melatonin from rice grains. A Box–Behnken design in conjunction with a response surface methodology based on six factors and three levels was used to evaluate the effects of the studied factors prior to optimizing the UAE conditions....
Article
A new microwave-assisted extraction (MAE) method has been investigated for the extraction of phenolic compounds from rice grains. The experimental conditions studied included temperature (125–175 °C), microwave power (500–1000 W), time (5–15 min), solvent (10–90% EtOAc in MeOH) and solvent-to-sample ratio (10:1 to 20:1). The extraction variables we...
Article
A new microwave-assisted extraction (MAE) method has been developed for the extraction of melatonin from rice grains. The stability of melatonin under MAE conditions was studied in order to define the working range. The studied analytical conditions for the MAE were temperature (125−175 °C), microwave power (500−1000 W), time (5−15 min), solvent (1...
Article
Full-text available
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...
Article
Full-text available
Red fruit oil (RFO) is a high-value oil that contains functional compounds, mainly phenolic compounds, providing antioxidant activity. Therefore, an optimal extraction method is essential to recover the RFO and phenolic compounds simultaneously. This research aimed to optimize the ultrasound-assisted extraction (UAE) for oil from red fruit using th...
Article
The brewing properties of coffee products are defined by the chemical composition in the bean, including sugars and polyols. Some factors, such as coffee species and roasting, may affect the level of these compounds in the bean. A new analytical microwave-assisted extraction (MAE) method has been developed to extract sugars and polyols from the cof...
Article
Full-text available
Kulit koro pedang putih dapat digunakan sebagai sumber selulosa. Salah satu alternatif untuk meningkatkan aplikasi selulosa adalah dengan memodifikasi selulosa menjadi produk turunan selulosa yaitu Hydroxypropyl Methyl Cellulose (HPMC). Tujuan dari penelitian ini adalah melakukan optimasi terhadap sintesis dan karkaterisasi HPMC dari selulosa kulit...
Article
Phenolic compounds are bioactive compounds that are naturally found in red algae. To determine the level of these compounds in the red algae, spectroscopic or chromatographic determination was applied over the liquid extracts. Therefore, a prior extraction method is needed. The presented study aimed to develop the analytical ultrasound-assisted ext...
Article
Full-text available
The algae Kappaphycus alvarezii is considered an important raw material for industrial practices, producing high economic value of various derived products. However, the quality of this commodity, which can be indicated by the level of phenolic compounds, may vary due to growth factors, including cultivation sites. An analytical UV-Vis spectrophoto...
Article
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The pandemic situation experienced by the world are currently threatening food security in various regions including Indonesia. In these regions, the flow of traffic in the agricultural and fisheries sectors, from the means of production to the distribution of the harvest, is choked up due to social restrictions in various parts of the region. As a...
Article
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Jack bean (Canavalia ensiformis), Indonesian local bean, has a high content of protein and great potential either for substituting or overcoming the shortage of imported soybean in tofu production. However, an appropriate coagulant in a proper amount is needed to make tofu with acceptable characteristics. This study set out to investigate the appro...
Article
Full-text available
Abstract Porang glucomannan is a polysaccharide extracted from Amorphophallus oncophylus and its degradation product is porang oligo-glucomannan (POG). It contains glucomannan, which has been used as an emulsifier, thickener, or as a nutritional supplement to counter many diseases. While it is believed to have health benefits, there are only limite...
Article
Full-text available
Sidaguri (Sida rhombifolia) is one of the herbal components used in traditional medicine. The application of chemometrics in the standardization of herbal medicine is common. The objective of this study was to classify Sidaguri from different regions based on FTIR spectra with chemometrics of principal component analysis (PCA) and to correlate the...
Article
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Betacyanins have been reported to provide prominent health-promoting effects, in addition to contributing to the exotic color and pleasant palate of red dragon fruit that has been attracting universal interest for over a decade. An accurate determination of betacyanins in dragon fruit is important if we are to benefit from the nutraceutical feature...
Article
Full-text available
Sweeteners have been used in food for centuries to increase both taste and appearance. However, the consumption of sweeteners, mainly sugars, has an adverse effect on human health when consumed in excessive doses for a certain period, including alteration in gut microbiota, obesity, and diabetes. Therefore, the application of non-nutritive sweetene...
Article
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Edible flowers have been widely consumed for ages until now. The attractive colors and shapes, exotic aroma, and delightful taste make edible flowers very easy to attain. Moreover, they also provide health benefits for consumers due to the unique composition and concentration of antioxidant compounds in the matrices. Knowing the bioactive compounds...
Article
Full-text available
An new method for the extraction of phenolic compounds from olive oil has been proposed before the chromatographic analysis by UPLC-PDA (Ultra-Performance Liquid Chromatography-PhotoDiode Array). Recoveries for 20 individual phenolic compounds were compared using three cartridges of solid-phase extraction including C-18, Diol, and DVB (DiVinylBenze...
Article
Full-text available
Most starch industries utilize maceration as the extraction method to recover starch from corn matrices; however, the production is time-consuming and often inefficient. Ultrasound-assisted extraction (UAE) appears to propose an enhancement of the extraction process. Hence, in this study, UAE has been developed to reach an optimum recovery in a sho...
Article
Full-text available
Roselle (Hibiscus sabdariffa L.), as an edible flower, has long provided an array of positive effects on human health. This benefit is a result of phenolic compounds that are naturally present mainly in the calyx. Plentiful medicinal remedies and functional foods based on this flower are available worldwide, as supported by the studies of phenolic...
Article
Full-text available
The growing demand for Spirulina (Arthrospira platensis) as a dietary supplement suggests that a rapid and reliable method to determine its saccharides and polyols content would be of great interest. Additionally, the impact of these microalga growing conditions may have on such content would be really useful for Spirulina producers. This manuscrip...
Article
Full-text available
Porang (Amorphophallus oncophyllus) is an indigenous tuber of Indonesia that rich in glucomannan. An alternative approach to produce porang oligo-glucomannan (POG) as prebiotic from porang glucomannan (PGM) was made by enzymatic hydrolysis using β-mannanase. This study aimed to produce POG under optimal conditions by controlled enzymatic hydrolysis...
Article
Full-text available
Ultrasound-assisted extraction (UAE) has been optimized to improve the current cassava starch production by conventional maceration for the extraction method. Evaluation of several extraction parameters disclosed significant effects (p < 0.05) by three studied factors (ultrasound power, x1; pulse duty-cycle, x2; and solvent to sample ratio, x3). Su...
Article
The acid dissociation constant (pKa) is the fundamental physicochemical properties required to understand the structure and reactivity of boronic acid-based material as a sensor that identifies carbohydrates. However, there is a lack of comprehensive study on the impact of the substituent on the pKa of monosubstituted phenylboronic acid in aqueous...
Article
Patin fish oils (PFOs) from fifteen different origins was evaluated the antioxidant activity using 2,2’-diphenyl-1-picrylhydrazil (DPPH) radical scavenging. All PFO samples were analyzed using Fourier Transform Infrared (FTIR) spectroscopy. The spectra were recorded in absorbance mode and processed statistically using multivariate chemometric techn...
Article
Full-text available
Phenolics are bioactive compounds already reported in Hibiscus sabdariffa (roselle). The present study reports the development and validation of the analytical microwave-assisted extraction (MAE) method for the determination of phenolic compounds in roselle flowers to establish their positive contribution to human health. Prior to the optimization,...
Article
Full-text available
The usage of food additives must respect the general legislation in force in the country and requires a reliable analytical method for surveillance. This research aimed to develop a high-performance liquid chromatography with diode array detection (HPLC-DAD) method for the simultaneous determination of seven food additives and caffeine in powdered...
Article
Full-text available
Mangosteen, or Garcinia mangostana L., has merged as an emerging fruit to be investigated due to its active compounds, especially xanthone derivatives such as α -mangostin (AM), γ-mangostin (GM), and gartanin (GT). These compounds had been reported to exert some pharmacological activities, such as antioxidant and anti-inflammatory, therefore, the d...
Article
Full-text available
The present research intends to develop a new method based on headspace-gas chromatography-ion mobility spectrometry (HS-GC-IMS) for the detection and determination of patin fish oil adulterated with different percentages of palm oil, because it is a cheaper vegetable oil. Five variables that affect headspace generation (incubation time and tempera...
Article
Full-text available
Authentication of Patin fish oil (MIP) is essential to prevent adulteration practice, to ensure quality, nutritional value, and product safety. The purpose of this study is to apply the FTIR spectroscopy combined with chemometrics for MIP authentication. The chemometrics method consists of principal component regression (PCR) and partial least squa...
Article
Full-text available
Objective: This study aimed to evaluate the antidiabetic and antidepressant effects of banana peel flakes in streptozotocin-induced diabetic rats. Methods: Twenty-five male Wistar rats were classified into five groups with different treatments. Groups I to IV were diabetic rats model groups that consumed only standard diet, standard diet containing...
Article
Rice, especially the pigmented varieties, contains a higher level of melatonin (N-acetyl-5- methoxytryptamine), which is used in treatment for sleeping disorders and for improving mood. It has potent antioxidant properties, anti-obesity, and anti-inflammatory, thus potential as the basis for functional food development. The purpose of the study was...
Article
Full-text available
The growing interest in spicy foods leads to the global demand for spices, particularly dried chili. This study aimed to assay both aflatoxin (AFs) and ochratoxin A (OTA) contamination using an integrative method of morphological identification, molecular detection, and chromatography analysis on dried chili provided from traditional and modern mar...
Article
Full-text available
Joruk is a traditional fishery product made by spontaneous fermentation process using lactic acid bacteria by salting method, followed by fermentation process. Hydrolysis of proteins with the pepsin and a combination of pepsin and trypsin enzymes by in vitro can produce bioactive peptides. The aims of this study were to investigate the change of so...
Article
Full-text available
The aroma of rice essentially contributes to the quality of rice grains. For some varieties, their aroma properties really drive consumer preferences. In this paper, using a dynamic headspace solid-phase microextraction (HS-SPME) system coupled to a two-dimensional gas chromatography (GC×GC) using a time-of-flight mass spectrometric detector (TOFMS...
Article
Both glycerolysis and the interesterification reactions take place in one reaction system. The objectives of this research were to obtain chicken stearin and to evaluate the effect of solvent to fat ratios and chicken stearin to palm stearin ratios on total mono-acylglycerol (MAG) and diacylglycerol (DAG) of product by the chemical glycerolysis-int...
Article
Fifteen phenolic compounds were determined in rice grains by ultrasound assisted extraction and ultra-performance liquid chromatography with photodiode array detection. Primarily, an UAE method has been developed and validated for the extraction of phenolics from rice grains. For the optimization, a Box–Behnken Design based on six factors including...
Article
Nowadays, there are many lifestyle diseases which cause public health problems worldwide. These diseases include cardiovascular problems, as well as their major factors such as hypertension. Hypertension is one of noncommunicable disease in the world implies the importance of further study of antihypertensive peptides as one of alternative means fo...
Article
There are several phenolic compounds in rice grains providing benefits for human health. The concentration of phenolic compounds in rice are strongly affected by the polishing steps during rice production. A new sensitive ultra-performance liquid chromatography–ultraviolet-visible spectroscopy method with photodiode array detection protocol has bee...
Article
Full-text available
Aims: To identify mold contaminant on salted fish, from two different market locations (Kenjeran market, Surabaya and Beringharjo market, Yogyakarta). Furthermore, levels of AFB1 (aflatoxin B1) in salted fish samples were assayed. Methodology and results: The samples were cultivated on DRBC (Dichloran Rose Bengal Chloramphenicol Agar) and DG-18 (Di...
Article
Full-text available
The objective of our research was to investigate the properties of jack bean tempeh during fermentation with two different packaging types, banana leaves and LDPE (Low-Density Poly Ethylene) Plastic. After 24 hrs mycelia of Rhizopushasnot been formed, but it fully formed after 36 hrs fermentation for all formulated tempeh with two different packagi...
Article
Full-text available
In order to decisively determine the adsorption selectivity of zirconium MOF (UiO-66) towards anionic versus cationic species, the adsorptive removal of the anionic dyes (Alizarin Red S. (ARS), Eosin (E), Fuchsin Acid (FA) and Methyl Orange (MO)) and the cationic dyes (Neutral Red (NR), Fuchsin Basic (FB), Methylene Blue (MB), and Safranine T (ST))...
Article
A Box–Behnken design was used in conjunction with multiresponse optimization based on the desirability function to carry out the simultaneous separation of tryptophan and 15 derivatives by Ultra Performance Liquid Chromatography. The gradient composition of the mobile phase and the flow rate were optimized with respect to the resolution of severely...
Article
Some cultural practices that are carried out during the grape ripening period are associated with vine stress, including leaf removal, grape bunch removal, and vegetable cover crops. Additionally, several nitrogen and sulfur supplements have also been used directly on leaves during the last stage of the ripening period. In the work described here,...
Article
An analytical ultrasound-assisted extraction (UAE) technique has been optimized and validated for the extraction of tryptophan and its derivatives from rice grains. A Box–Behnken design in conjunction with a response surface methodology based on six factors and three levels was used to evaluate the effects of the studied factors prior to optimizing...
Conference Paper
Full-text available
Salted fish is subjected to a process of salting and drying as a method of inhibiting fish spoilage. Nevertheless, salted fish can be contaminated by mold and aflatoxin B1 which is produced by mold. The aim of this study was to determine which types of mold could contaminate salted fish, which was obtained from the markets of Pasar Kenjeran, Suraba...
Article
Apart from being a foremost source of calories for a large part of the world’s population, cultivated rice (Oryza sativa) provides beneficial effects for human health through several bioactive compounds, including phenolics. Therefore, to earn this advantage, it is essential to retain the phenolics through appropriate post-harvest practices. In thi...
Conference Paper
Phenolics have been positively associated with many health benefits due to their prominent antioxidant activities. Sample extractions are required before chromatographic measurements for the determination of phenolics in matrices. Hence, the aim of this study was to assess the stability of 40 phenolic compounds of different families (benzoic acids,...
Conference Paper
On top of being a prominent source of calories for more than half of the world’s population, cultivated rice (Oryza sativa) provides beneficial effects for human health through several bioactive compounds, including phenolics. To earn this advantage, it is essential to assess the profile of these compounds through appropriate cooking practices. In...
Conference Paper
Full-text available
On top of being a prominent source of calories for more than half of the world's population, cultivated rice (Oryza sativa) provides beneficial effects for human health through several bioactive compounds, including phenolics. To earn this advantage, it is essential to assess the profile of these compounds through appropriate cooking practices. In...
Conference Paper
Full-text available
This study compares the high performance liquid chromatography (HPLC) and ultrahigh performance liquid chromatography (UPLC) methods for the determination of melatonin in rice extracts. The methods were validated in terms of linearity, precision, limits of detection (LOD) and quantification (LOQ). Repeatability and intermediate precisions expressed...
Poster
A Box Behnken Design (BBD) in conjunction with multiple response optimizations was performed to develop the simultaneous separation of twenty phenolic compounds in rice grains by Ultrahigh Performance Liquid Chromatography (UPLC) coupled with Photodiode Array (PDA) detector. The gradient compositions of mobile phase and flow rate were optimized wit...
Poster
Emerging evidence supports that a number of health-promoting substances have been identified in rice (Oryza sativa) including phenolic compounds. The development of single optimized extraction of phenolic compounds from plant may complicate due to the structural diversity as having multiple hydroxyl groups which results the polarities of these comp...
Poster
The grain aroma is a primary sensory attribute of high-quality rice that contributes a critical impact on consumer preference. Aromatic rice possesses typical volatile compounds released from the grain that discriminates aromatic rice varieties from ordinary ones. These varieties have become more widely appreciated in the current market. Furthermor...
Poster
Different cultivar practices have been applied to vine to promote specific components related to final wine flavor. Some of the cultivar practices are related to vine stress, including leaf removal, grape bunch removal and vegetable cover crops. Some nitrogen and sulfur supplements have been also used directly to leaves during the last stage of the...
Poster
Cultivated rice (Oryza sativa) is a global staple food that subsists calories for more than half of the world’s population. Emerging evidence supports that a number of bioactive compounds have been identified in rice including tryptophan and its derivatives (oxitriptan, serotonin, tryptamine and auxin). The development of single optimized extractio...
Conference Paper
A Box Behnken Design (BBD) in conjunction with multiple response optimizations was performed to develop the simultaneous separation of tryptophan and fifteen related compounds in rice grains by Ultrahigh Performance Liquid Chromatography (UPLC) coupled with Photodiode Array (PDA) detector. The gradient compositions of mobile phase (%B start and %B...
Article
Rapid extraction techniques with ultrasonic systems have been established to extract resveratrol from two functional foods, namely cookies and jams. The ultrasound-assisted extraction (UAE) was optimized using a full factorial design with three variables: solvent composition (10–70% and 30–90% methanol in water for cookies and jams, respectively),...
Conference Paper
Cultivated rice (Oryza sativa) is a global staple food that subsists calories for more than half of the world’s population. Emerging evidence supports that a number of health-promoting substances have been identified in rice including phenolic compounds. Hence, individual profile of these compounds is essential to determine in both raw and processe...