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Examining dried noodle characteristics made from modified Xanthosoma sagittifolium flour and xanthan gum Yurika Sugiharto; Ika Yohanna Pratiwi; Oki Krisbianto; Aham Bulan Maya Srihtam
AGROINTEK Vol 19, No 3 (2025)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v19i3.24576

Abstract

Gluten allergy has raised concerns due to its impact on health, especially as wheat noodles are widely consumed. The growing demand for gluten-free alternatives highlights the need for suitable substitutes. This study investigates the effects of fermentation modification on the amylose and protein content of tannia cocoyam flour and evaluates the impact of modified tannia flour and xanthan gum on the physicochemical and sensory properties of noodles. Fermentation of tannia cocoyam (Xanthosoma sagittifolium) corm flour using 9% Lactobacillus plantarum starter over 48 hours enhanced the characteristics of tannia cocoyam noodles. However, despite these improvements, the noodles remained brittle and lacked the desired chewiness compared to conventional noodles. The introduction of xanthan gum as a binding agent was used to improve noodle attributes. Various xanthan gum concentrations (0%, 1%, and 2%) were assessed for their impact on physicochemical parameters (color, optimal cooking time, rehydration capacity, cooking loss, and elongation) and sensory preferences. The findings revealed that modification of tannia cocoyam flour using the fermentation method influenced noodle color, while different xanthan gum concentrations had no discernible effect. Furthermore, modification of tannia cocoyam corm flour and the specific xanthan gum formulations influenced cooking loss, elongation, and the preferences of the panelists.
The Effect of Drying Methods on the Physicochemical Characteristics of Curly Red Chili (Capsicum annuum L.) Birgitta Allison Kesuma; Ika Yohanna Pratiwi; Yohannes Somawiharja
Journal of Agri-Food Science and Technology Vol. 6 No. 4 (2025): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jafost.v6i4.12906

Abstract

Curly red chili has high nutritional content, which includes capsaicinoids, vitamin C, carotenoids, and antioxidant compounds. However, their high moisture content renders them perishable. During peak harvest seasons, prices for chili significantly decrease, while they tend to rise in colder months. Inefficient postharvest technologies contribute to substantial waste due to damage. Effective postharvest processing, such as drying, mitigates these challenges by reducing moisture content and extending shelf life. Various drying methods, including food dehydration, oven, vacuum frying, and freeze drying, have distinct advantages and disadvantages. Comparative studies have been conducted on these methods specifically for curly red chili. This study contributes to evaluating the effects of different drying methods on the color, moisture content, vitamin C content, and capsaicin concentration of curly red chili (Capsicum annuum L.) in order to determine the most effective method for preserving its nutritional and physicochemical qualities. The results indicate that the drying method significantly influences the physicochemical properties of curly red chili. Among the methods tested, freeze-drying emerged as the most effective, based on the color of 66.69 ± 2.25, moisture content of 3.81%, and vitamin C of 94.34 mg/100g. The optimal treatment yielded a spiciness level of 16504.71 SHU with a capsaicinoid content of 1100.32 mcg/g. Further research is needed to explore how moisture content affects capsaicin levels in curly red chili.
Selected Total Lipid Analysis Methods from Conventional to Advanced Approaches Anggara, Jaclyn Regina; Kartikawati, Muliasari; Yoewono, Jessica Renata; Pratiwi, Ika Yohanna
Jurnal Teknologi Pangan Vol 20, No 1 : JUNI 2026
Publisher : UPN VETERAN JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jtp.v20i1.5667

Abstract

Lipids are essential components of food, contributing to nutritional quality, physical properties, and sensory characteristics. Therefore, total lipid analysis is crucial in food evaluation. However, the variety of lipid fractions and the intricacy of food matrices necessitate the use of suitable, precise, and effective analytical techniques. A qualitative narrative review of the evolution of total lipid analysis techniques, including traditional, contemporary, and non-destructive procedures, is presented in this article. International open-access research publications from 2016 to 2025 were used to create the literature, which was then compared according to its constraints, performance, efficiency, and guiding principles. Despite their time and consistency restrictions, traditional solvent-based techniques like Goldfisch, Soxhlet, Bligh and Dyer, and Mojonnier are still often employed because of their ease of use. Higher efficiency and selectivity are provided by contemporary techniques like Supercritical Fluid Extraction (SFE), Microwave-Assisted Extraction (MAE), and Pressurized Liquid Extraction (PLE), while Near-Infrared Spectroscopy (NIRS) has become a quick and effective non-destructive substitute. This review emphasises the importance of integrating conventional and modern methods in total lipid analysis according to the analysis objectives and characteristics of the food matrix.
Arrhenius-based shelf-life prediction of lombok terong (Capsicum) sambal with sodium benzoate and potassium sorbate combination Eileen Fiona Wijaya; Fransisca Romana Titis Suniati; Oki Krisbianto; Evelyn Goeyana; Ika Yohanna Pratiwi
AGROINTEK Vol 20, No 2 (2026)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v20i2.27479

Abstract

Lombok terong is a variety of chili belonging to the Capsicum genus, and one of its processed products is sambal sauce. Due to its limited shelf life, preservatives must be used to extend it. This study utilized a combination of sodium benzoate and potassium sorbate in a 1:1 ratio. The objective was to identify suitable indicators of quality degradation and critical parameters for predicting the shelf life of lombok terong sambal sauce (LTSS), and to develop a predictive model based on the Accelerated Shelf-Life Testing (ASLT) method using the Arrhenius approach. The study tested samples over 30 days, with observations made every six days. The samples were stored at temperatures of 30℃ (S30), 40℃ (S40), and 50℃ (S50), with two replicates per treatment, and each replicate measured in triplicate. Indicators of quality degradation included color analysis and Total Plate Count (TPC), while water content, water activity, and pH analysis were critical parameters. Based on the experimental results, TPC analysis was selected as the indicator of quality degradation, as significant microbial growth was observed in the sample stored at 50℃ by day 18. Meanwhile, pH analysis was identified as the critical parameter due to significant decreases observed across all storage conditions. As a result, the estimated shelf-life equation for lombok terong sambal sauce can be formulated as t = pH0 - 4.4 × e3612T1642.542.