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Kab. jember,
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INDONESIA
Jurnal AGROTEKNOLOGI
Published by Universitas Jember
ISSN : 19781555     EISSN : 25024906     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Agroteknologi terbit 2 (dua) nomor per volume, dan mempublikasikan hasil penelitian dalam bidang ilmu dan teknologi pertanian yang mencakup teknologi hasil pertanian, enjiniring pertanian, dan agroindustri. Selain itu, dimungkinkan membahas berbagai ulasan ilmiah, resensi buku, komunikasi singkat, dan paket industri yang terkait dengan agroteknologi.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 17 No 02 (2023)" : 5 Documents clear
Peningkatan Mutu Buah Jeruk Siem Berdasarkan Masa Panen Basis Kalender dan Karakteristik Fisik dan Sensorisnya Handayani, Nurma; Akhiriani, Shanti; Rahmawati, Ani
JURNAL AGROTEKNOLOGI Vol 17 No 02 (2023)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/j-agt.v17i02.43096

Abstract

Harvesting the siem orange from its plants usually is not uniform. Citrus farmers sell their crops based on the request of the middlemen regardless of the age of harvest. Thus the price is relatively cheaper because it depends on the middleman during selling. So, this research aims to improve the quality of siem orange fruit based on the calendar harvesting and physical sensory characteristics. These research was conducted on farmers in Krai Village, Yosowilangun District, Lumajang Regency during the harvest period from March to July 2023. The flowering period for siem oranges was calculated at least 40 weeks in advance. Parameters observed in this study included diameter and weight, degrees of brix, sensory to grain color/squeeze, and level of sweetness. The results showed that the good quality of siem oranges fruits were produced in the harvest calendar from 32 to 36 weeks after flowering. Meanwhile for orange squeeze drink, siem orange harvested at 29 weeks after flowering. Good quality of siem oranges had a heavy weight of siem orange, juicy, dark orange pulp color, and brix degree value ranging of 10–12o. Based on this study, it was recommended for farmers to harvest siem oranges at the optimal harvesting age of 34 weeks from the flowering period so that the quality of the siem oranges fruits was optimal and the selling price could be higher. Keywords: brix value, grade, quality, siem orange fruit
Sifat Mekanik dan Kemampuan Biodegradasi Antimicrobial Bioplastic Berbasis Kulit Buah Naga Merah (Hylocereus polyrhizuz) dan Ekstrak Daun Biduri (Calotropis gigantea) Arista, Yuvita Lira Vesti; Mutamimah, Dewi
JURNAL AGROTEKNOLOGI Vol 17 No 02 (2023)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/j-agt.v17i02.42930

Abstract

Plastic is often chosen as packaging for food products because it’s considered practical, non-corrosive, low cost, and able to withstand product water migration, but it’s difficult to degrade. So that need biodegradable plastic untuk handle that, but most of the biodegradable plastics that have been developed only focus on ease of degradation, do not focus on the microbial contamination problem. One alternative that can be developed is to make antimicrobial bioplastic based on starch from dragon fruit peel and biduri leaves as an antimicrobial source. Until now there is no further information regarding the mechanical properties and degradation ability of antimicrobial bioplastic based on starch from dragon fruit peel and biduri leaf waste. Therefore this research was carried out to determine the mechanical properties including tensile strength, modulus young, and elongation as well as degradation ability. The research was conducted using the completely randomized design factorial method which consists of 2 factors where the first factor was variation of the dragon fruit peel starch (P1: 15%, P2: 30%, P3: 45%, P4: 60%) and the second factor was the addition of biduri leaf extract (B1: 3%, B2: 6%, B3: 9%, B4: 12%. Research on the mechanical properties of elongation, tensile strength tests, and elongation at break tests was carried out using Mat. Testing Machine while Young's modulus testing uses tension testing. Antimicrobial bioplastic degradation capability testing using Aspergillus niger is calculated based on weight loss. The research results showed that the treatment with the addition of 15% dragon fruit peel starch (P1) had good mechanical properties ranging from tensile strength, modulus young, and elongation, while the addition of biduri extract had no effect. The best biodegradation ability was with the addition of 60% starch (P4). The use of starch in greater concentrations can reduce mechanical properties but increase biodegradation capacity. Keywords: antimicrobial packaging, biodegradable polymer, cross linkig, starch
Formula dan Umur Simpan Minuman Serbuk Berbasis Rosela dengan Penyalut yang Berbeda Monita, Gita; Mardiah, Mardiah; Jumiono, Aji; Akil, Syahril; Amalia, Lia
JURNAL AGROTEKNOLOGI Vol 17 No 02 (2023)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/j-agt.v17i02.44170

Abstract

Research on functional foods has been conducted by many researchers for healthy benefit (as an anti-obesity, anti-inflammatory, herbal drink, etc). One interesting research is the development of roselle (Hibiscus sadbariffa Linn) based functional foods in the form of powder drinks and its shelf life during storage. So that, this study aims to determine the shelf life of powder drinks made from roselle extract, lemon extract, mangosteen peel extract, and EGCG (epigallocatechin galat). In this study, the application of roselle extract was carried out with three different types of coating materials. Determination of shelf life was tested for moisture content, anthocyanin content, and vitamin C content to obtain roselle extract formulations with selected coating ingredients. The data obtained were analyzed using oneway ANOVA. The powder drink formulation was stored at 3 different temperatures of 25, 35, and 45oC for 16 days. Tests were carried out on days 0, 4, 8, and 16 days. The shelf life calculation is calculated based on the Accelerated Shelf Life Test (ASLT) Arrhenius model. The results showed that the type of encapsulated coating had a significant effect on the characteristics of water content, anthocyanin levels, and vitamin C levels at the level of 95%. The F3 sample (roselle extract, maltodextrin, pectin, and whey) was the most stable sample and had the longest shelf life in roselle powder beverage at 512 days at a storage temperature of 25oC. Keywords: anthocyanin, coating material, roselle extract, shelf life, vitamin C
Analisis Preferensi Konsumen Terhadap Produk Bath Bomb Salt Lemongrass di Kabupaten Bangkalan, Madura Maflahah, Iffan; Hidayati, Meilina; Fakhry, Muhammad; Asfan, Dian Farida
JURNAL AGROTEKNOLOGI Vol 17 No 02 (2023)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/j-agt.v17i02.30269

Abstract

Bath bomb salt is a processed salt product and is a new product. New products need to test consumer preferences so that the product circulated follows the wishes of consumers. Consumer preferences are used to increase the effectiveness of marketing products or services. This study aims to determine consumer preferences for bath bomb salt lemongrass products and analyze consumer preferences using the conjoint analysis method on bath bomb salt products. The research method used is the conjoint method. The research was conducted in Bangkalan Regency and used 100 respondents. Based on the results of the research, it can be found that consumer preference attributes include color (varies), usage effect (safe for skin), benefits (removes dirt on the skin), and main ingredients (Epsom salt, sodium bicarbonate and citric acid). The order of consumer preferences for bath bomb salt lemongrass products is color with a weight value of 34.875%, benefits with a weight value of 22.733%, main ingredients with a weight value of 22.158%, and usage effects with a weight value of 20.234%. Keywords: bath bomb salt, conjoint analysis, consumer preferences
Produksi Xilosa dari Xilan Limbah Ampas Singkong Menggunakan Bacillus subtilis, Aureobasidium pullulans, dan Penicillium janczewskii Arianti, Fefpi Nur Afnifitri Wias; Ratnadewi, Anak Agung Istri; Nurhayati, Nurhayati; Jayus, Jay
JURNAL AGROTEKNOLOGI Vol 17 No 02 (2023)
Publisher : Faculty of Agricultural Technology, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/j-agt.v17i02.41326

Abstract

The demand for xylose as a xylitol raw material is increasing. The resource for this material can be explored from agricultural waste such as lignocellulosic material which is widely available in nature, cheap, and renewable. The bioconversion of lignocellulose waste into xylose can use microbes, either single culture or microbial consortia. The purpose of this research is to find out the ability of Bacillus subtilis, Aureobasidium pullulans, and Penicillium janczewskii to convert xylan of cassava waste to produce xylose, under both single individual culture and its consortia. The xylose release from the cultures were measured using DNS tests followed by HPLC determination. The results showed that the single microbial culture of B. subtilis, A. pullulans, and P. janczewskii was able to produce xylose released into the culture broth which was 75.06, 81.72, and 82.00 ppm respectively, indicating the xylanolytic enzymes activities from this microorganism which have the ability to convert xylan into xylose. Unexpectedly, all the mix culture of these microbial consortia were unable to produce higher xylose, the amount of xylose released were even lower became 63.11 ppm only when B. subtilis, A. pullulans, and P. janczewskii worked together in a simultaneous culture. This finding indicated that these three microorganisms might not be able to hydrolysed the xylan synergistically. Keywords: bioconversion, lignocellulosic material, microbial consortia, xylanolytic enzyme

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