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Journal of Agri-Food Science and Technology (JAFoST)
Published by Universitas Ahmad Dahlan
ISSN : 26860716     EISSN : 27465519     DOI : https://doi.org/10.12928/
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry
Journal of Agri food Science and Technology is a peer review journal that the Food Technology Department officially publishes Faculty of Industrial Technology Universitas Ahmad Dahlan As a scientific journal JAFOST publishes research and scientific studies related to the development of chemical or biochemical science engineering processing technology biotechnology and the food industry Authors are required to register in advance and upload the manuscript online The process of the document could be monitored through OJS Authors readers editorial board editors and peer review could obtain the manuscript real time status Our journal welcomes high quality manuscripts resulting from a research project in the scope of Chemical biochemical science Food engineering Food processing technology Biotechnology and Food industry
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Makanan
Articles 74 Documents
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Effect of Soybean (Glicyne max (L.) Merill) with Lamtoro Gung (Leucaena leucocephala) Proportion on the Characteristics of Soy Milk Ramadhania, Rizky Laila; Saidi, Ida Agustini; Nurbaya, Syarifa Ramadhani; Machfudz, Al
Journal of Agri-Food Science and Technology Vol. 4 No. 1 (2023): April
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i1.7317

Abstract

The utilization of soy milk is an alternative for people with lactose intolerance. Soy milk can be made with lamtoro gung substitution because the nutritional content of lamtoro gung is close to soybeans. This research aimed to determine the effect of soybean/lamtoro gung proportion on the characteristics of soy milk. This research was conducted from May until July 2022. The experimental study used a randomized block design with the treatment were soybean (K) with lamtoro gung (L) proportion S1 (K 100%: L 0%), S2 (K 95%: L 5%), S3 (K 90%: L 10%), S4 (K 85%: L 15%), S5 (K 80: L 20%), S6 (K 75%: L25), S7 (K 70%: L 30%) S8 (K 65%: L 35%), and S9 (K 60%: L 40%). The data obtained were then analyzed using analysis of variance and further test BNJ 5%, the organoleptic test used Friedman test, and determine the best treatment used effectiveness index. The results showed a significant effect of soybean with lamtoro gung proportion on protein content, vitamin C content, vitamin A content, pH, viscosity, TDS, and hedonic test of aroma and taste. The best treatment was S3 (soybean 90%: lamtoro 10% with characteristics of protein content 3.304%, vitamin C content 0.291%, vitamin A content 2.239 mg/g, pH 5.917, viscosity 3.533×103 mPa.s, TDS 7.833 °brix, and hedonic test of color 3.40, aroma 3.30, taste 3.40, and texture 3.20. This study contributes to evaluate the soy milk characteristics from soybean and lamtoro gung.
Effect Of UV-Assisted Titanium Dioxide (TiO2) Photocatalysis on Viable Airborne Bacteria and Fungi in The Seasoning Powder Industry Cakrawati, Dewi; Aprilianto, Kevin; Faridah, Chintya Nur; Utami, Kiki Diyah Ayu
Journal of Agri-Food Science and Technology Vol. 4 No. 1 (2023): April
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i1.7660

Abstract

Titanium dioxide (TiO2) has been known to have anti-microbial activity against fungi, bacteria, and viruses. The application of TiO2 in the membrane attached to the air conditioner was expected to minimize airborne microorganisms. This study contribution to investigate the efficacy of UV-assisted TiO2 photocatalysis in controlling airborne microorganisms in the seasoning powder industry. TiO2 was coated to the non-woven membrane and attached with a UV lamp inside the air conditioner. When the AC was on, the Ti3+ was released into the air. Enumeration of airborne microorganisms was conducted by opening the agar plates for 15 min at several food processing facilities, followed by incubating agar plates for 72 hours at 30 °C. The result shows dry processing facility had the highest number of initial airborne bacteria while the wet production facility had the highest number of initial airborne fungi. Interestingly, the number of airborne microorganisms fluctuated in the packaging facility related to the number of people going inside and outside. On the contrary, the number of airborne microorganisms was deficient in empty rooms, which indicated that the number of airborne microorganisms might be related to people and products. Overall, airborne microorganisms were reduced after 60 min of irradiation. Therefore, it is recommended to irradiate the facilities for 60 min before production start. SEM images and EDAX analysis results show TiO2 was detected after 160 h. However, it was recommended to change the TiO2 membrane after one month. This research was expected to contribute to controlling airborne microorganisms during food production in food processing facilities.
Physico-chemical Characteristics of Jelly Drink with Variation of Red Dragon Fruit Peel (Hylocereus polyrhizus) and Additional Sappan Wood (Caesalpinia sappan) Indriani, Osa Desvy; Khairi, Amalya Nurul
Journal of Agri-Food Science and Technology Vol. 4 No. 1 (2023): April
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i1.7069

Abstract

Red dragon fruit peel can be developed into a jelly drink because it naturally contains pectin which can be used as a thickening agent. Sappan wood contains bioactive substances including antioxidants of 15.69 ppm, anthocyanin 2.43%, and brazilin which can increase the red color in jelly drinks. This study contributes to determining the physicochemical characteristics of the red dragon fruit peel jelly drink with the addition of sappan wood. This study consisted of three formulations and a control. The concentrations of red dragon fruit peel and sappan wood were F1=1.5:0.5, F2=1.7:0.3, F3=1.9:0.1, and control (F4=2 :0). The product evaluation consists of pH, gel strength, viscosity, crude fiber, and moisture content. This study showed that the physical properties of jelly drink had a pH value between 6.49-6.67, a gel strength between 0.20-0.22, and a viscosity between 372-583 mPa.s. The chemical properties of jelly drinks have 1.29-2.13% crude fiber and 71.27-76.69% moisture content. This study showed that the higher the red dragon fruit peel concentration and the lower the sappan wood used, the higher the gel strength, viscosity, and crude fiber content, and lowered the pH value and moisture content.
An Online Survey of the Dietary Practices of Saudi Students in the UK: A Quantitative Study Abu Qurain, Ali M; Al Turki, Fatimah A; Hall, Jason; Alzain, Hassan M; Mitchell, Graeme; Leavey, Conan
Journal of Agri-Food Science and Technology Vol. 4 No. 1 (2023): April
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i1.7641

Abstract

There has been an abundance of research on the dietary practices of international university students in the United Kingdom (UK), as they comprise a significant proportion of the country’s undergraduate population. However, there is a paucity in the literature with regard to the dietary practices, or other health behaviours, of Saudi students studying in the UK. Therefore, this empirical study sought to provide new insights to address this gap. This study contribution to investigate the dietary practices of Saudi students in the UK. The data was collected from a sample of 212 university students and encompassed an age range from 18 to 31+ years. A quantitative methodology was adopted in the form of an exploratory survey questionnaire. The sample was recruited through voluntary and snowball sampling techniques. Questionnaire data was analysed using Microsoft Excel and SPSS for Windows, version 26. The results demonstrated that various intrapersonal, interpersonal, and environmental factors play a significant role in developing eating behaviours and dietary choices. Some favourable changes in dietary practices were observed among Saudi students in the UK as opposed to Saudi Arabia, including a higher intake of fruit and vegetables, along with a lower intake of soft drinks, sugary and fatty foods. However, there was a notable reduction in consumption of all types of meat and fish as well as the total number of daily meals. Additionally, around a third of participants regularly consumed ready-to-eat food and takeaways 2-6 times a week. Interventions should therefore consider individual, societal and environmental factors.
Chemical Characteristics of Non-Dairy Cheese from Coconut Milk as an Alternative Ingredient for Lactose Intolerance Halim, Judella Kusuma; Hidayah, Nurul; Juwitaningtyas, Titisari; Mutmainah, Mutmainah; Fitriani, Aprilia
Journal of Agri-Food Science and Technology Vol. 4 No. 1 (2023): April
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i1.8724

Abstract

Lactose-intolerant people are unable to ingest cheese since it includes lactose. Lactose-free cheese can be made using coconut milk as an alternative. Coconut milk can substitute milk as a raw material for cheese production because it is rich in proteins such as albumin, globulin, prolamin, and glutelin. This research aims to determine how different proportions of coconut milk and soy extract affect the nutritional value of coconut milk cheese. Cheeses with 80:20, 70:30, and 60:40 ratios of coconut milk to soy extract are made by directly acidifying soy extract with lemon juice. Protein, lipid, and moisture content were all evaluated. At compositions 80:20, 70:30, and 60:40, the protein content of coconut milk cheese was 3.85%; 4.80%; and 5.73%, respectively. Coconut milk cheese had lipid contents of 28%, 27%, and 25.74%, respectively; the moisture contents were 64.93%; 61.92%; and 60.49%. This research contributes to utilizing coconut milk as a milk substitute.
The Characteristics of Flour from Mango Seeds Anggraini, Anggraini; Aprillia, Selfi; Aktawan, Agus
Journal of Agri-Food Science and Technology Vol. 4 No. 2 (2023): November
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i2.6948

Abstract

Indonesia produces 3,308,895 tons of mangoes in 2022. One type of mango in Indonesia is mango golek. Golek mango seeds can be processed into flour as a source of carbohydrates. The research contribution is the feasibility of golek mango seed flour based on SNI 3751:2009. Proximate analysis was used to determine the nutritional content of the golek mango seed flour. Flour is produced within 2 hours 30 minutes where the temperature variations are 80, 85, 90, 95, and 100 ℃. The proximate analysis consisted of the analysis of carbohydrate content, protein content, fat content, moisture content, ash content, and organoleptic tests. This study obtained an average carbohydrate content of 13.39%, an average protein content of 5.32%, an average water content of 0.80%, an average fat content of 0.33%, and a moderate ash content. 0.97%. The lower the yield of protein, water, fat, and ash, the lower the carbohydrate content, and vice versa. The results of the organoleptic test showed that the higher the temperature used during the oven, the darker the colour, the sharper the aroma, and the smoother the texture of the golek mango seed flour.
Food Demand Projection and Consumption Patterns of Urban Households in Nigeria’s Kano State Sadiq, Sanusi Mohammed; Singh, Invinder Paul; Ahmad, Muhammad Makarfi; Isah, Musa Ahmad; Alibaba, Ahmad
Journal of Agri-Food Science and Technology Vol. 4 No. 2 (2023): November
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i2.7730

Abstract

Changes in population and income are essential components for altering the pattern of food demand. In light of the importance of food demand analysis, this study set out to ascertain urban household consumption trends in Nigeria’s Kano State in order to forecast future demand levels for certain food items. This research contributes to becoming a basis for policymakers to increase food productivity. A household’s cross-sectional survey data elicited through a well-structured questionnaire complemented with an interview schedule from a total of 144 households chosen via a multi-stage sampling procedure was used for the study. The collected data were analyzed using both Linear Approximate/ Almost Ideal Demand System (LA/AIDS) and factor analysis models. Based on empirical evidence, households’ poor purchasing power is owed to high food inflation, which causes them to have low dietary diversity. Besides, the necessary and luxury goods, respectively, were rice, beans, spaghetti, and meat; and millet, yam, Irish potatoes, semovita, fish and groundnut. Meanwhile, maze, garri, and palm oil were established to be inferior commodities. Besides rice and semovita being everyday goods, they demand high price-sensitive commodities. Consequently, to maintain the status quo in the households’ welfare, the onus lies on policymakers to compensate consumers if there is a rise in the prices of local rice, indomie and groundnut oil. The study advises policymakers to increase the productivity of those food items projected to witness the steep-to-gentle rise in demand, and government should endeavour to adopt macro-economic policies with human-face so as to cushion/soften households’ economic hardship in the study area.
Effect of Wheat Flour and Yellow Pumpkin Flour Ratios on The Physical, Chemical Properties, and Preference Level of Cookies Salma, Nabila; Setiyoko, Agus; Sari, Yuli Perwita; Rahmadian, Yudi
Journal of Agri-Food Science and Technology Vol. 4 No. 2 (2023): November
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i2.7882

Abstract

Cookies are made from flour, eggs, vanilla, margarine, and baking powder ingredients. The weakness of standard cookies is their low antioxidant content. Therefore, innovation is needed to increase the antioxidant level of these cookies. This study contributes to determining the effect of adding yellow pumpkin flour on selected cookies' physical, preference level, chemistry properties, and antioxidant activity. The proportion of adding pumpkin flour consists of 0%, 10%, 20%, 30%, 40%, and 50%. The physical analysis included color, texture, expansion volume, and the level of preference, including flavor, color, taste, texture, and overall, which are used to select the most preferred cookies by panelists. The chemical analysis includes moisture, ash, protein, carbohydrate contents, and IC50 value for the most preferred cookies by panelists. The findings indicated that the selected formula by the panelist was cookies with 20% pumpkin flour substitution. The physical characteristics of cookies are a lightness color of 54.15, a texture of 1572.7 gF, and an expansion volume of 46.2%. The chemical elements are as follows: moisture content of 4.68%, ash content of 1.53%, protein content of 8.15%, fat content of 26.10%, carbohydrate content by the difference of 59.54%, and IC50 as much as 84.84 ppm, which means that the selected cookies have intense antioxidant activity. The experiment's contribution was that increasing antioxidant intake through dietary choices can positively impact overall health and potentially reduce the need for medicinal intervention.
The Effect of Foaming Agent and Whipping Time on Albedo Characteristics of Watermelon Flour Setiyoko, Agus; Putri, Soraya Kusuma
Journal of Agri-Food Science and Technology Vol. 4 No. 2 (2023): November
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i2.9088

Abstract

The fruit's rind is one of the natural waste products that can support nutrients like carbohydrates, proteins, and lipids. Reused rind contributes significantly to the effective handling of this fruit's byproduct. Processing watermelon rind into powder by lowering water content and activity is an alternative to extending its shelf life. The flour form is easier and more suitable for application in multiple processing food products such as snacks, beverages, bread, and pasta. The focus of this study was to verify the optimal state for foam mat drying using concentrations of foaming agent in the form of egg albumin (10, 15, 20), foam stabilizer in the form of CMC with concentrations of 1 %, and whipping time (5, 7, and 9 minutes) on for bulk density, WSI, hygroscopicity, L* value, a* value, b* value of total phenol and antioxidants activity, and the maximum antioxidant content of watermelon albedo flour using Completely Randomized design with 2 factorial resulting in nine treatments with three replications. Based on the outcome, the bulk density of the resulting watermelon albedo flour ranges from 0.25-0.50 gr/cm-3 and 0.11-0.26%. of WSI; 22.63-28.18g/100g-1 of hygroscopicity; 1.92-4.67% of total phenol; 47.48-66.59% of L*value; 3.74-6.11% of a*value; 5.47-16.08% of b*values and 6.80- 25.26% RSa of antioxidants activity. The best treatment for antioxidant activity was 25.26% RSA using 10% of the foaming agent and whipping time in 9 minutes. These findings have implications for the food industry because they suggest that treatments can influence the properties of watermelon albedo flour.
Effect of Drying Time on Physicochemical Characteristics of Dragon Fruit Peels Powder (Hylocereus polyrhizus) Qalbi, Rainatul; Giovani, Sarah; Guo, Qiyong; Adelina, Nadya Mara
Journal of Agri-Food Science and Technology Vol. 4 No. 2 (2023): November
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v4i2.9294

Abstract

The increasing production and demand of dragon fruit (Hylocereus polyrhizus) in Indonesia produces a high amount of dragon fruit peel waste that can pollute the environment. As an alternative, dragon fruit peel could be applied as a functional food ingredient due to its high fiber content and antioxidant capacity. This study contributed to analyzing the effect of drying time on the physical and chemical characteristics of dragon fruit peel powder. To optimize the functional properties, dragon fruit peel was developed into a powder that was prepared by using a food dehydrator at 60 °C with drying times of 4, 5, and 6 h. The results showed that the longer drying time led to lower moisture and protein content, which reached the lowest at 9.73% and 13.07% with a drying time of 6 h, respectively. Meanwhile, drying time (4-6 h) did not significantly affect the ash (13.74-14.57%), fat (22.46-23.46%), and crude fiber content (29.13-31.75%) of dragon fruit peel powder. The drying time can affect antioxidant activity significantly, while the highest antioxidant activity was found in 6 h drying time (IC50 0.03 gram/mL). The L* value was measured between 29.68-30.23, a* value 9.61-10.34, and b* value 15.20-16.53. The drying time of 4 h could maintain the color of dragon fruit peel and produce the highest yield product at 4.52%. In general, drying dragon fruit peel powder for 4 hours gave the best results for high fiber content and high yield. Drying it for 6 hours was suggested to increase its antioxidant activity.

Page 4 of 8 | Total Record : 74

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