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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati agriTECH Pro Food JITIPARI (Jurnal Ilmiah Teknologi dan Industri Pangan UNISRI) Indonesian Food and Nutrition Progress Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Canrea Journal: Food Technology, Nutritions, and Culinary Journal
Triwitono, Priyanto
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering

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Indeks Glisemik Kacang Buncis (Phaseolus vulgaris) dan Kacang Panjang (Vigna sesquipedalis) serta Uji Efek Hipoglisemiknya pada Tikus Sprague Dawley Marsono, Y.; Triwitono, Priyanto; Kanoni, Sri
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 3 (2005): October 2005
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (202.813 KB) | DOI: 10.24002/biota.v10i3.2879

Abstract

Glycemic index (GI) of foods has been suggested as an additional parameter in selecting foods for the diabetic patients in nutritional management. GI was measured as the area under the postprandial blood glucose curve for a food expressed as a percentage of the area after the consumption of reference food (bread). In this research two legumes were investigated including snap bean (Phaseolus vulgaris L.) and yardlong bean (Vigna sesquipedalis). The objectives of this research were (i) to determine the IG of the beans and (ii) to investigate the effects of these legumes on serum glucose concentration of alloxan-induced diabetic rats. Ten health and normal volunteers (not diabetic) were provided. The volunteers took an overnight fasting, blood were drawn in the morning and analyzed for serum glucose. Then they were given the test beans containing total carbohydrates equivalent to 25-g glucose to be consumed. Blood samples were drawn for glucose measurement every 30 minutes until 120 min after meal. Serum glucose was determined enzymatically and the glucose responses were drawn graphically to calculate the GI of the beans. These beans were evaluated for their hypoglycemic properties in alloxan-induced diabetic rats. They were fed modified AIN 93 diets contain 20% of energy derived from snap bean or yardlong bean for 28 days. Serum glucose concentrations were measured weekly. It was found that with white bread as the food standard the GI of the snap bean and yard long bean were 43 and 86, respectively. In 28 days of diet intervention, snap bean decreased the serum glucose level by 73% (from 212mg/dL to 56mg/dL). Similar effect were found for the yardlong bean. This bean can reduced serum glucose level about 73% (from 224mg/dL top 61mg/dL), but both were similar to control diet that decreased the serum glucose level about 72% .
Germination Changes The Chemical Composition and Improves Antioxidant Activity of Indonesian Local Brown Rice var Mentikwangi: Germinasi Merubah Komposisi Kimia dan Meningkatkan Aktivitas Antioksidan pada Beras Pecah Kulit Lokal var Mentikwangi Saputra, Wahyu Dwi; Saputra, Adrian Dwi; Triwitono, Priyanto
JITIPARI Vol 9 No 2 (2024): JITIPARI
Publisher : Universitas Slamet Riyadi Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33061/jitipari.v9i2.10901

Abstract

Previously, germination was reported in many studies that could improve the nutritional status and bioactive compounds in brown rice. However, the change of those functional properties was randomly different in diverse varieties. This study aimed to evaluate the change in chemical composition and functional properties of germinated brown rice from the Mentikwangi variety, one of the local paddy rice in Indonesia. Brown rice was germinated using the soaked and aeration method for 48 h. After that, the proximate compositions were analyzed including the change of total phenolic compounds and radical scavenging activity. We observed that germination in Mentikwangi brown rice significantly increased the crude protein content, but reduced the lipid and total carbohydrate contents. Moreover, the antioxidant activity was improved in germinated Mentikwangi brown rice sample due to the improvement of total phenolic compounds. These results affirm the previous studies which concluded that germination attenuated the functional properties of brown rice, so that has the potential to be developed as a future functional food.
Karakteristik Fisik, Kimia, dan Daya Terima Kerupuk Karak dengan Penambahan Tepung Beras dan Tepung Tapioka serta Perbedaan Metode Pemasakan Hapsari, Rahma; Supriyanto, Supriyanto; Triwitono, Priyanto
Pro Food Vol. 10 No. 2 (2024): Pro Food (Jurnal Ilmu dan Teknologi Pangan)
Publisher : Fakultas Teknologi Pangan dan Agroindustri, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/profood.v10i2.364

Abstract

The innovation of making karak crackers can be done by using the one-time cooking method and adding flour as a thickener. This method is more efficient than the usual two-times cooking method. And replace the use of bleng because it can affect the health of the body. The flour used is rice flour and tapioca flour. The purpose of the study was to examine the effect of the ratio of rice flour and tapioca flour addition and the method of making karak crackers on chemical, physical, and sensory properties. A two-factor completely randomized design was used to study the effect of the ratio of rice flour to tapioca flour (0:1; 1:1; 1:2; and 1:0) and the cooking method factor (two-time and one-time cooking method). Karak crackers were tested for chemical characteristics (moisture content and amylose content), physical characteristics (texture hardness, development volume, and brightness), and panelist’s acceptability. The results showed that the ratio of rice flour and tapioca flour in Karak crackers significantly affected amylose content, moisture content, texture hardness, and development volume). Meanwhile, the cooking method significantly influenced moisture content, development volume, and brightness. Panelist acceptability also showed that samples with rice flour and tapioca flour in the ratio of 0:1 and 1:1 in the factor of two-time cooking and samples with a ratio of 1:0 in the factor of one-time cooking were the optimal samples. This was because these samples’ acceptability was not significantly different from the comparison sample.
Production, biological activities and functional food of modified cassava flour (mocaf) Khasanah, Yuniar; Anastasia Wheni Indrianingsih; Triwitono, Priyanto; Agnes Murdiati
jurnal1 VOLUME 7 ISSUE 2, DECEMBER 2024
Publisher : Hasanuddin University Food Science and Technology Study Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/canrea.v7i2.1280

Abstract

Cassava is predominantly produced in tropical regions, including Asia, Africa, and South America. In the developing countries, cassava includes in the big four comestibles with other commodities such as rice, wheat, and maize. It offers several advantages over other crops, such as affordability, ease of consumption, drought tolerance, the ability to grow on in marginal land at lower cost, and beeing the biggest producer of carbohydrates per hectare. However, cassava tuber is quickly perishable, because of its high-water content, making it more susceptible to rotting. To extend their shelf life, one approach is the production of modified cassava flour (mocaf).  Mocaf is typically produced through a fermentation process by microorganism involving lactic acid bacteria. Studies have demonstrated that mocaf can serve as the primary ingredients for various food and various foods and snacks, such as cookies, cake, noodles, and others food traditionally made with wheat flour or starch-based material. Compared to regular cassava flour,mocaf offers improved flavor and color and is also more cost-effective than wheat flour. The use of mocaf is promising since several studies also showed the use of mocaf to produce functional foods for human health. The purpose of this review was to elaborate the published articles on the production, biological activities, and functional food from modified cassava flour. The promising potential of mocaf is summarized, along with data on its biological activities in food and health contexts. Furthermore, recommendations for future research on the industrial applications of mocaf are provided.
Physicochemical Characteristics and Antidiabetic Potential In Vitro of Analog Rice Based on White Greater Yam (Dioscorea alata) and Yellow Pumpkin (Cucurbita maxima) Imama, Darus Dina; Triwitono, Priyanto; Saputra, Wahyu Dwi
agriTECH Vol 45, No 2 (2025)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.97284

Abstract

Type 2 Diabetes Mellitus (T2DM) is a metabolic disease characterized by the presence of increased blood sugar due to insulin resistance and β-cell dysfunction maintaining the body homeostasis by lowering blood sugar levels. People with T2DM are advised to avoid consuming foods that can trigger an increase in blood sugar levels. However, daily consumption of Indonesians still depends on ordinary rice, which has a high glycemic index and can increase blood sugar levels. This shows the need to produce substitute such as analog rice, which is safe to consume by people with T2DM. Analog rice is artificial product that uses raw materials from grains or tubers. Therefore, this research aimed to produce high-antioxidant analog rice by using white greater yam and yellow pumpkin as the main ingredients. The results showed that increasing the concentration of yellow pumpkin caused a rise in physical properties such as water absorption and b value, which was the yellow color appearing in analog rice. Chemical properties such as water content, ash, and protein were increasing but starch, carbohydrates, amylose, and amylopectin levels decreased. Total phenolics, DPPH, and ABTS antioxidants, the percentage of inhibition activity of α-amylase enzyme, and descriptive sensory tests including appearance, aroma, texture, and flavor also showed an increase. The best formula was obtained in P1 treatment comprising 85% white greater yam and 15% yellow pumpkin. Specifically, P1 showed % α-amylase inhibition activity of 42%, DPPH antioxidant activity 82.39%, ABTS 86.47%, and a favorability test value of 4. This value was considered neutral, showing the potential to be well-received by panelists.
Bioavailability of Nano-calcium from Parang Fishbone Extracted with Alkaline Solvent at Varying Ratio of NaOH and Extraction Time Hayati, Febsi; Pranoto, Yudi; Triwitono, Priyanto
Indonesian Food and Nutrition Progress Vol 22, No 1 (2025)
Publisher : Indonesian Association of Food Technologists

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ifnp.95320

Abstract

Calcium is an important nutrient that supports various biological functions of the body. Calcium plays a role in osmoregulation, muscle contraction, bone mineralization, blood clotting, and regulating the body's acid and base balance. Calcium absorption can be optimal in the body if it has a smaller particle size, namely nano-sized. Parang fish bones have great potential to be used as a source of calcium in the form of nano-calcium. Nano-calcium is calcium in the form of small particles, completely absorbed into the body, and can optimally meet the body's calcium needs. This research aims to evaluate the effect of variations in alkaline solvent concentration and extraction time on particle size and calcium levels of the resulting nano-calcium and determine the absorption of Parang fishbone nano-calcium in the in vitro bioavailability process of the inverted intestinal sac. The nano-calcium extraction method combines a sample ratio of NaOH at 1:3, 1:4, and 1:5 with extraction times of 30, 60, and 90 minutes. The in vitro reverse gut method tested the obtained nano-calcium for bioavailability. The concentration of the basic solvent and the optimum extraction time influence the nano-calcium produced due to the optimal contact time between the material and the solvent during the extraction process. Nano-calcium treatment with a sample ratio: NaOH of 1:4 with an extraction time of 60 minutes, resulted in a water content of 5.67%, ash content 74.20%; protein content 3.52%; fat content 0.117%; calcium content 35.46%; yield 44%, particle size 62 nm; and bioavailability at a 10 minute absorption time of 9.105%, a 20 minute absorption time of 9.222% and a 30 minute absorption time of 9.334%. The sample ratio treatment: NaOH 1:4 with an extraction time of 60 minutes is the best treatment because it can produce a smaller nano-calcium size and high bioavailability.
Optimization of Microwave Treatment to Improve Adsorption Properties of Porous Rice Starch Maharani, Elok Pawening; Triwitono, Priyanto; Pranoto, Yudi; Marseno, Djagal Wiseso
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1553-1562

Abstract

Porous starch (PS) is used in various foods as a flavoring, absorbent, and to protect vitamins and oils. Rice starch is processed to minimize the preparation time of PS, while simultaneously maintaining its adsorption efficiency. This study aims to optimize microwave treatment to improve the water, oil, and methylene blue adsorption capacity and PS yield of rice. This study used Response Surface Methodology (RSM) with Central Composite Design (CCD) to optimize the water, oil, and methylene blue adsorption capacity and PS yield of rice. Two factors were considered: time (X₁: 3-15 s) and power (X₂: 100-200 W/g). The statistical significance of the responses was evaluated using analysis of variance (ANOVA) at the 95% confidence level, with differences considered significant at p<0.05. Linear and quadratic models were the modes suggested by the software. Model analysis showed that microwave time and power significantly affected the adsorption properties. Based on the research results, the optimum conditions for making porous rice starch were obtained by using a microwave time of 15 s and a power of 171 W/g, resulting in a water absorption capacity of 96.34±2.93%, an oil absorption capacity of 142.85±0.94%, a methylene blue absorption capacity of 34.73±5.67%, and a yield of 95.26±3.23%.
Co-Authors Agnes Murdiati Anastasia Wheni Indrianingsih Djagal Wiseso Marseno Elok Pawening Maharani Hapsari, Rahma Hayati, Febsi Imama, Darus Dina Kanoni, Sri Saputra, Adrian Dwi Saputra, Wahyu Dwi Supriyanto Supriyanto Y. Marsono Yudi Pranoto Yuniar Khasanah