Jurnal Teknologi & Industri Hasil Pertanian
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    144 research outputs found

    Application of ethylene adsorber by active charcoal for extending the banana shelf life [Penggunaan etilen adsorber yang terbuat dari arang aktif untuk memperpanjang umur simpan buah pisang]

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    Bananas is a tropical fruit that is quite popular because of their freshness and can be consumed directly or processed as a snack. Banana cultivation is increasing along with the increasing demand for bananas in the market. As a climacteric fruit, bananas ripen quickly so they spoil quickly and have a low shelf life. To extend shelf life, ethylene gas in the surrounding environment must be controlled, for example, using active packaging made from ethylene gas absorbent. Several studies used activated carbon from coconut shells, chitosan, and teak leaves as ethylene absorbent material to extend the shelf life of climacteric fruit (e.g., guava, avocado, and tomato) with various types of packaging and doses of absorbent materials. This study examines the shelf life of bananas packaged in active packaging that absorbs ethylene using activated charcoal from coconut shells. As a result, activated charcoal with the addition of KMnO4 to absorb ethylene could extend the shelf life of bananas for 6 days longer than without activated charcoal

    Kelayakan daun keluak (Pangium edule Reinw) sebagai pengawet alami produk perikanan berdasarkan profil mutu sensoris dan keamanan mikrobiologi [The appropriateness of Pangi (Pangium edule Reinw) leaves as natural preservative based on sensory quality and microbiological safety profile]

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    Daun keluak (Pangium edule Rinew) digunakan oleh masyarakat suku Dayak Ahoeng untuk mengawetkan daging dan ikan sebagai wujud dari kearifan lokal. Daun ini diketahui mengandung senyawa antibakteri yaitu tanin, fenol dan asam sianida. Sebuah percobaan faktor tunggal (lama pengawetan) yang disusun dalam Rancangan Acak Lengkap telah dilakukan dengan tujuan untuk menentukan karakteristik mutu sensoris dan keamanan mikrobiologi ikan selama pengawetan menggunakan daun keluak. Perlakuan yang dicobakan adalah lama pengawetan 1 sampai 4 hari dan menggunakan ikan segar sebagai kontrol. Masing-masing perlakuan diulang sebanyak 3 kali. Parameter yang diamati adalah mutu sensoris hedonik ikan (SNI 2729:2013), ALT dan bakteri patogen (Coliform, Escherichia coli, Salmonella sp., Vibrio cholera, dan Vibrio parahaemolyticus). Hasil penelitian menunjukkan bahwa mutu sensoris hedonik ikan Lele Sangkuriang selama empat hari pengawetan menunjukkan perbedaan yang nyata (p<0,05) untuk semua atribut. Ikan lele Sangkuriang masih menunjukkan kualitas yang baik dengan skor mutu hedonik 6, 8, 7 dan 7 berturut-turut untuk kenampakan bola mata, lendir permukaan badan, bau dan tekstur pada pengawetan hari kedua. Pengawetan menggunakan daun keluak dapat mempertahankan keamanan mikrobiologi ikan lele Sangkuriang selama satu hari berdasarkan parameter ALT, Coliform, dan Salmonella sp. Cemaran V. parahaemolyticus mulai terdeteksi setelah dua hari pengawetan. Cemaran E. coli dan V. cholera mulai terdeteksi masing-masing setelah pengawetan selama 3 dan 4 hari. Pengawetan menggunakan cacahan daun keluak dapat mempertahankan mutu sensoris hedonik dan keamanan mikrobiologi ikan lele Sangkuriang sampai pengawetan hari ke satu berdasarkan syarat mutu SNI 2729:2013 tentang ikan segar

    Profil gelatinisasi, karakteristik mikrobiologi dan sifat fungsional pati jagung ketan terfermentasi [Gelatinization profile, microbiological characteristics and funtional properties of fermented waxy corn starch]

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    Waxy corn (AJU1) is widely cultivated in Gorontalo Province, but its utilization is limited to corn on cobs.  A potential diversified product of processed waxy corn to be developed is waxy corn starch. One simple method to improve the functional properties of waxy corn starch is fermentation. This study aimed to determine the effect of different fermentation conditions and fermentation times on the gelatinization profile and functional properties of waxy  corn starch. The research method used a completely randomized factorial design with two treatment factors namely fermentation conditions (aerobic and anaerobic) and fermentation time (3, 6, and 9 days).  Results showed that the fermentation conditions significantly affected property of waxy corn starch.  During fermentation, there was a change in the number of cells of lactic acid bacteria, yeast, and mold. The gelatinization profile of  fermented waxy corn starch was to have resistant to stirring and high temperatures and reduced its retrogradation tendency. The fermentation process also changed the functional properties of glutinous corn starch, namely an increase in solubility, swelling, and acidity (decrease in pH).Keywords: aerobic, anaerobic, fermentation, starch, glutinous corn [AJU1

    Vegetable leather pada berbagai perbandingan rumput laut (Eucheuma cottonii) dan daun beluntas (Pluchea indica L.) : evaluasi sifat sensori dan fisik

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    Vegetable leather can be produced from beluntas leaves which have a high crude fiber content mixed with hydrocolloid compounds such as seaweed (Eucheuma cottonii) as a binder. The purpose of the study was to obtaini a comparison ofi beluntas leavesi and seaweed E. cottonii which produced ithe bestasensory and physical properties of vegetable leather. The studye was arranged in a Completely Randomized Block Design (CRBD) withi 6 levels of treatmenti with a comparison ofi beluntas leavesi and seaweed  (Eucheuma cottonii) i.e. 30%:70%; 40%:60%; 50%:50%; 60%:40%; 70%:30% and 80%:20% and 4 repetitions. The data homogeneity and additivity were tested using Bartletti and Tukey tests, then analyzed for varianceeand further itested with LeastaSignificant Difference (LSD) at 5% level. The resultsdshowed the comparison of 30% beluntas leaves : 70% seaweed was found to be the best treatment, which resulted in a texture score of 4.55 (compact), aroma score of 4.30 (not scented with beluntas leaves), taste score of 4.83 (like), color score 4.55 (blackish green) and overall acceptance score 4.42 (like), physical test tensileestrength of 9.43 MPa, percent elongationpof 1.34% and thickness of 0.13 mm. The moisture content of the best vegetable leather was 13.34%, ash content was 19.74%, fat content was 1.29%, protein content was 13.14%, and antioxidant activity was 1576.14 ppm

    Aktivitas antidiabetes dan antioksidan pati jagung yang dikonjugasi dengan katekin [Antidiabetic and antioxidant activities of catechin conjugated corn starch]

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    High levels of carbohydrate consumption, especially starch, are considered to be an important risk factor for diabetes mellitus (DM). Conjugation of starch with phenolic compounds those have antidiabetic activity such as catechin is suggested increase health benefit of the starch.  Objective of this research was to find out optimal catechin concentration that was able to be conjugated into corn starch to produce conjugated starch with high antidiabetic and antioxidant properties. The synthesis of starch-catechin conjugates used free-radical grafting (FRG) by adding different concentration of catechin, namely 0%, 0,5%; 1%; 1,5%; and 2%. The result of the research indicates that increasing of catechin concentration grafted into starch increase the phenolic content of the starch. Conjugation of catechin into starch posed higher antidiabetic and antioxidant activities. Starch conjugated with 2.0% catechin had the best antidiabetic and antioxidant activities, therefore, it had potentiality to develop as functional starch for diabetes patients

    Analisis prospektif pengembangan agrotechnopreneurship berbasis potensi sektor pertanian di Kabupaten Jember [Prospective analysis of potential-based agrotechnopreneurship development in the agricultural sector in Jember Regency]

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    The pandemic several years ago has impacted employment problems with the increase in the number of unemployed in Jember Regency. One effort can be made to develop agrotechnopreneurship as a community business.  This study aims to analyze the prospects for developing agrotechnopreneurship by utilizing the potential of the agricultural sector in Jember Regency.  The analysis focused on potential agrotechnopreneurship products developed in Jember Regency today: mocaf, chili sauce, coconut briquettes, shredded catfish, and cow's milk kefir.  This research uses a prospective analysis method structured based on states that may occur in the future.  The results showed several scenarios for developing potential agrotechnopreneurship in Jember Regency, generally including optimistic and pessimistic scenarios.  The development of agrotechnopreneurship in chili sauce, coconut briquettes, shredded catfish, and cow's milk kefir has an optimistic scenario, indicating a promising potential for future growth. This optimistic scenario can be realized if the key factors in the development of agrotechnopreneurship can be improved as expected. Meanwhile, the development of mocaf agrotechnopreneurship has a pessimistic scenario. Keywords: agrotechnopreneurship, Jember Regency, prospective analysis, the agricultural secto

    Pendugaan umur simpan kerupuk sagu goreng dengan pendekatan kurva isoterm sorpsi air [Shelf-life estimation of fried sago crackers by water sorption isotherm curve approach]

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    Fried sago crackers are dry local foods easily damaged by moisture during storage. To increase economic value and open commercialization opportunities, a study aimed to estimate the shelf life of white and red fried sago crackers using an acceleration method based on the water sorption isotherm curve. Estimating the shelf life was carried out by storing crackers in several modified jars containing different saturated salt solutions. Calculating the moisture permeability constant of polyethylene and polypropylene packaging was also carried out to support the necessary data. The results showed that sago crackers packaged in polypropylene had a longer shelf life than polyethylene plastic. The white sago crackers with polypropylene plastic had a shelf life of 19.89-69.83 days at 70-90% RH, while polyethylene was 12.02-42.21 days at 70-90% RH with 0.0434 g H2O.g solid-1 critical water content. The red sago crackers with polypropylene plastic had a shelf life of 18.26-69.93 days at 70-90% RH, while polyethylene was 11.04-42.27 days at 70-90% RH with a critical water content of 0.0455 g H2O.g solid-1. The chosen model for the water sorption isotherm curve was Hasley and GAB, with equation log (ln (1/aw)=-1.82-1.31 log Me for white sago fried crackers and Me=(0.5157aw)/(1-0.9632aw)(1+15.578aw) for red sago fried crackers, respectively. Fried sago crackers in polypropylene plastic packaging have the potential to be developed as local food products with a longer shelf life

    Karakterisasi mutu minuman jeli okra nanas dengan kombinasi karagenan-konjak[Characterization of pineapple okra jelly drink quality with different concentrations of carrageenan-konjac combination]

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    ABSTRACTOkra-pineapple jelly drink requires hydrocolloid as a gelling agent. The combination of carrageenan-konjac hydrocolloid used was 75:25 in order to produce acceptable and good quality jelly drink characteristics. This study aimed to characterize the quality of pineapple okra jelly drink with the addition of hydrocolloid (carrageenan-konjac combination). The concentration treatments of the carrageenan-konjac combination 75: 25 in this study were 0.6%, 0.7%, 0.8%, 0.9% and 1%. The research was carried out using a completely randomized design (CRD) experimental method with one factor and 3 replications. Data were analyzed statistically with ANOVA and Duncan multiple range test. The results showed that the concentration of the carrageenan-konjac combination had a significant effect on viscosity, water content, total dissolved solids, hedonic and scoring texture quality tests, but had no significant effect on pH, hedonic and scoring tests for color, taste and aroma. The best concentration of carrageenan-konjac combination in pineapple okra jelly drink was a concentration of 0.9% which had characteristics: viscosity 2488.33 cP, pH 4.05, water content 94.22%, total dissolved solids 5.10º Brix and sensory score from 3.9-4.2 (like) for color,  aroma ,  taste and texture.   This best treatment had greenish yellow color, fragrant aroma,  sweet taste and slightly chewy texture. The supporting test in the form of antioxidant activity test (IC50) was 16.47 ppm indicated  in the very strong category.

    KAJIAN PROSES HIDROLISIS ENZIMATIK PATI DALAM TEPUNG SORGUM MANIS [Study of Enzymatic Hydrolysis of Sweet Sorghum Strach]

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    Sweet Sorghum strach (Sorghum bicolor, L. Moench) was hydrolyzed for substituing the molasses on fermentation industry, i.e. ethanol and glutamic acid production. Pretreatment for strach conversion of the different stored strach by means of athmospheric batch cooking process presented the contradictive result. The amylases dosage for strach conversio of the stored sweet sorghum seem to be equal to the fresh cassava processing. Both total sugar (20 to 28% w/v) and te screened meal size (20-100 mesh) had a litlle effect on the rate of strach hydrolysis. After 24 hours of incubation, the strach was converted to the reducing sugar up to 85% dextrose equivalent. On the contrary, strach of fresh seet sorghum could not be liquified as the concentration of total sugar was reduced to 15% (w/v). The matrix protei of glutelin in which this protein bids the strach granules contributes to the diffficulty of digesting sweet sorgum meal

    Aktivitas antimikroba, karakteristik fisikokimia, dan hedonik gel biosanitizer ekstrak daun kelor (Moringa oleifera) [Antimicrobial activity, physicochemical and sensory characteristic of Moringa oleifera leaf extract biosanitizer gel]

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    Moringa leaves have bioactive compounds of flavonoids and tannins, which can be used as antimicrobials to substitute triclosan and glycerol compounds in commercial sanitizer gels. This study aims to determine the antimicrobial activity, physicochemical characteristics, and sensory properties of the moringa leaf extract of the bio-sanitizer gel. The research consisted of two stages: the extraction of Moringa leaves and the stages of making bio-sanitizer gel. The study used a factorial completely randomized design (CRD) with two factors: the type of solvent and the ratio of sample to solvent. Data were analyzed using variance (ANOVA) and Duncan's Range Test (DMRT). The results showed that all samples added to Moringa leaf extract had an antibacterial activity with inhibition zone values that did not differ between treatments within a range of 2.5-3.0 mm. All samples of Moringa leaf extract bio-sanitizer gel have the potential to inhibit E.coli and S.aureus bacteria. The treatment selected for this study was a bio-sanitizer gel of Moringa leaf extract with ethanol solvent and concentration of 1:6 with a pH value (3.90), viscosity (5.57), homogeneous, and having the preferred sensory value (aromatic = 6.47, color = 5.89, viscosity = 5.54, tackiness = 5.48, overall = 5.95).

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