Jurnal Teknologi dan Industri Pangan
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The Effect of Beans and Baking on Banana Bar Qualities
Full text linkBeans are good protein sources for producing banana bars for emergency foods. According to the previous reports, the baking temperatures and times affect the quality of the banana bar. This study aims to evaluate the effect of bean flour types (soybean, mung, and winged bean) as well as the baking temperatures and times on the banana bars chemical characteristics, organoleptic, and microbiological quality. The above three bean flour types were used, and three baking methods were also compared. The baking processes were (1) 40 min at 120°C followed by 10 min at 100°C, (2) 40 min at 125°C and (3) 40 min at 105°C followed by 10 min at 120°C. Additionally, the proximate, total energy, organoleptic, and total bacterial counts were evaluated. The results showed that all banana bars can be classified as high-energy foods based on protein, fat, carbohydrate, and total energy. The organoleptic properties using different baking methods were not significantly different, and the highest score was found in the banana bar added with mung bean flour. In addition, the total bacterial count all products did not exceed the standard
Ready-To-Eat Rice in Retort Pouch Packaging as an Alternative Emergency Food Product
Full text linkRecently, the rising incidence of natural catastrophe has increased the disaster preparedness, aiming to mitigate its devastating effect. Developing an emergency food is one of meaningful attempts to rise the preparedness. This research aimed to determine the best formula of ready-to-eat rice in retort pouch packaging accepted by consumers, and to determine the operating time to reach a lethality value (F0) to meet the commercial shelf-stable food requirements as an emergency food. The thermal process adequacy (F0) was used to determine the commercial shelf-stable products according to Indonesian regulation. The results showed that the determination of ready-to-eat rice was dependent on the ratio of rice and water. The most accepted product was determined according to quality attributes and organoleptic tests applied to meet the criteria for emergency food, namely color, flavor, and texture and best perceived by consumers. A formula with 140 g of half-cooked rice and 60 g of water was attributed to the best sample, having hardness of 7305.45 gf, elasticity of 36.40%, gumminess of 2185.720 gf, and adhesiveness of -167.975 g.s. In terms of microbiological quality, the TPC for the half-cooked rice sample reached 7.2×107 CFU/mL, while cooked rice in retort pouch packaging was <25 CFU/mL. Using heat distribution curve, heating at 110°C produced a come up time (CUT) after 40 min. Furthermore, the F0 value was 4.12 which was in accordance with the Indonesian regulation
Produksi Hidrolisat Protein Kacang Koro Benguk dengan Aktivitas Penghambat Kerja Enzim Pengkonversi Angiotensin melalui Kombinasi Fermentasi dan Hidrolisis Enzimatik
Full text linkMucuna bean (Mucuna pruriens L.) is a legume having high protein content which has the potential as a source of bioactive peptides. One of the bioactive peptides is an angiotensin-converting enzyme (ACE) inhibitor, thus, mucuna beans might be used as a potential source of antihypertensive compounds. This study aimed to increase the functionality of proteins from mucuna beans as ACE inhibitors using a combination of fermentation and enzymatic hydrolysis followed by membrane filtration. The mucuna beans were fermented for 0, 24, 48, 96, and 144 h. The highest ACE inhibitory activity of 54.37%, was obtained by fermentation of the beans at 48 h, with a protein content of 20.82 mg/mL. The 48 h fermented mucuna beans were further hydrolyzed using alcalase or neutrase and subsequently filtered with UF membranes having 20,10 and 5 kDa cut-off. The enzymatic hydrolysis followed by membrane filtration increased the ACE inhibitory activity of mucuna beans. The neutrase hydrolysates resulting from 5 kDa membrane filtration showed the best ACE inhibitory activity (62.96% with a protein content of 10.39 mg/mL). A combination of fermentation and enzymatic hydrolysis followed by filtration using UF-membrane was able to produce ACE inhibitory peptides from mucuna beans. The potential of mucuna beans peptides as ACE inhibitors was due to the presence of negatively charged amino acid residues such as Asp and Glu, positively charged amino acids such as Arg and Lys, and hydrophobic amino acids such as Val, Leu, Ala, and Ile
PHYSICAL CHARACTERISTICS, SENSORY EVALUATION, AND AMINO ACID CONTENT OF POWDERED OVER FERMENTED MLANDING TEMPEH
Full text linkMlanding tempeh is non-soybean tempeh made from ripe lamtoro (Leucaena leucocephala) seed. In Wonogiri, an area in Indonesia, over fermented mlanding tempeh (OFMT) is often used as a seasoning for traditional food since it produces a special taste. OFMT is also dried to extend the shelf life, making it easier to use as a seasoning. This research aims to study the physical characteristics, sensory evaluation, and amino acid content of powdered over fermented mlanding tempeh (POFMT). The drying of the OFMT used a cabinet dryer with variations in drying temperatures of 55, 60, and 65°C for eight hours. Then, it was mashed and sifted to obtain POFMT. The obtained powder was then analyzed for its physical characteristics in yield, water absorption capacity, solubility, bulk density, sensory evaluation with the hedonic test, and amino acid content. This study found that different drying temperatures significantly affected the yield and water absorption but did not significantly affect the solubility and bulk density. The yield values varied between 7.06-12.92%; water absorption capacity varied between 0.36-0.55 g/g; solubility varied between 36.45-41.33%; bulk density varied between 0.38-0.42 g/mL. The sensory evaluation results showed that the panelists\u27 preference for POFMT with variations in drying temperature was not significantly different. In addition, the amino acid content of POFMT varied between 0.99-5.43% (db), with the highest levels being glutamic acid and aspartic acid
PREFERENSI KONSUMEN TERHADAP EMPAT VARIETAS UNGGUL MANGGA INDONESIA BERDASARKAN RESPON EMOSI
Full text linkUnderstanding the consumer preferences and needs for new products is really important to support the acceptance and marketing success of a product. This study associated the preferences with emotional responses to various ready-to-eat and fresh food products. The objective was to obtain the preference based on emotional responses from different superior mango cultivars named agri gardina 45 (AG), gadung 21 (GD), red garifta (GM) and orange garifta (GO). The preference profile was measured by the 9-point hedonic scale, while the emotional response by EsSense25 combined with rating questionnaire and 5-point scale. This study involved 108 panelists. The finding showed that consumers liked gadung and orange garifta, while slighlty liked agri gardina and red garifta. Additionally, the EsSense25’s response showed that 4 out of 25 emotional terms were significantly different among the cultivars, namely happy, joyful, satisfied, and disgusted. However, fifteen attributes among the 25 emotion terms strongly correlated with liking, with the strongest terms on joyful, happy, satisfied, interested, secure, and free. These six emotions were associated with garifta orange, one of the newly released cultivars. The results suggested that garifta orange is potentially well-accepted and commercialized widely
Karakteristik Fisikokimia dan Kapasitas Antioksidan Kopi Liberika dari Kabupaten Tanjung Jabung Barat, Jambi
Full text linkLiberica coffee is one of the coffee species in commercial trade in Indonesia. The coffee is produced in Tanjung Jabung Barat Regency, Jambi, Indonesia which distributed into 5 sub-districts (Betara, Bram Itam, Kuala Betara, Pengabuan, Senyerang). Information about liberica coffee from Jambi is still limited, thus more exploration is needed. The objectives of this study were to characterize the morphology of the leaf and fruit, the physicochemical characteristics which include the dimension (length, width, thickness), mass, bulk density, colour (L*, a*, b*), moisture contents, TSS (total soluble solids), pH, and antioxidant capacity (DPPH IC50, FRAP) of green and roasted (commercial level) liberica coffee from the above 5 sub-districts. The studies showed that liberica coffee from 5 sub-districts in Tanjung Jabung Barat Rgency, Jambi had various leaf and fruit appearances which were characterized by various size and colour of coffee cherries. Green coffee from different sub-districts owned various physicochemical (width, volume, mass, bulk density, moisture content, TSS) and antioxidant capacity of green coffee. Green coffee from Betara and Pengabuan were associated with high TSS, L* and b* value, while green coffee from Bram Itam and Senyerang were associated with high mass, moisture content and a* value. The highest anti-oxidant capacity was produced by green coffee from Betara and Kuala Betara (DPPH IC50). Meanwhile, roasted coffee produced from green coffee from the 5 sub-districts with similar roasting level (similar L*) produced similar a*, b* value, mass and TSS. However, physicochemical characteristics (length, width, volume, bulk density, moisture content) and antioxidant capacity of these roasted beans varied
Analisis Senyawa Aktif Trigeminal Andaliman dengan Variasi Metode Pengeringan dengan Pendekatan GC-MS
Full text linkSanshool compounds are the trigeminal active compounds in andaliman (Zanthoxylum acantho-podium DC) with a numbing and tingling sensation. The analysis of such compounds is usually done through HPLC approach; however, limited studies have reported that the analysis of such compounds could be conducted with Gas Chromatography-Mass Spectrometry (GC-MS). This method could save research time and funding by analyzing both sanshools and volatiles simultaneously, which would describe the complete profile of andaliman flavor compounds. This study aimed to confirm the potency of GC-MS in analyzing sanshool compounds and to utilize this method in studying the impact of different drying methods towards andaliman trigeminal active compounds. Andaliman was dried with five drying methods (sun, sunshade, air, oven, and freeze-drying) and was macerated with chloroform, concentrated, and analyzed with GC-MS. The results of this study showed that GC-MS was able to analyze sanshool compounds efficiently. Drying had no statistically significant impact on sanshool quantities extracted from andaliman. Fresh andaliman contained 0.69 % (dry weight basis) of α-sanshool, the main sanshool in andaliman. On the other hand, dried andaliman contained 0.80-1.08% of α-sanshool (dry weight basis). As oven drying managed to produce andaliman with a similar concentration of α-sanshool at a faster time and more affordable cost than other drying methods, oven drying was suggested as the ideal drying method to extend the shelf life of andaliman
SINTESIS NANOPARTIKEL PERAK (NPAg) DENGAN BIOREDUKTOR EKSTRAK BIJI JARAK PAGAR DAN KAJIAN AKTIVITAS ANTIBAKTERINYA
Full text linkThe redox analysis as indicated by a change in color from yellow to reddish-brown was measured at the optimum wavelength of 405 nm with the highest redox result of 480 nm obtained in the NPAg-S sample. The optimal absorption wavelength changes according to the characteristics of the NPAg produced, but is generally in the range of 400-500 nm. Analysis of the active groups with the FTIR instrument showed active groups (OH, CH aldehyde, vibrations of CN bonds in the amine group, amide I groups from proteins, and CO double bonds in the 4000-1500 cm-1) zone. Additionally, in the identification zone 1500-600 cm-1 the formation of CN bond vibrations and the presence of an amide I group from the protein was found. Photographs at 10.000 and 15.000x magnification showed that the morphology of the distribution of NPAg in the jatropha seed extract solution was polydisperse and in the form of fibrous balls with non-uniform particles and tended to agglomerate. The distribution and size of the particles measured using the Particle Size Analyzer (PSA) instrument showed that the particle size ranged from 33-116 nm. NPAg-S samples at two concentrations (1 and 2%) showed inhibitory activity for all types of Gram positive and Gram negative bacteria. Analysis of the particle size distribution using PSA showed that the particle size of the NPAg-S sample was 33.8 nm, which was smaller than the NPAg-K sample of 44.8 nm. Antibacterial activity is strongly influenced by the particle size of a sample. Small size silver nanoparticles have a large surface area to interact with bacteria as compared to large silver nanoparticles, thus they can provide a greater antibacterial effect
The Effects of Processing Time on the Total Phenolic, Flavonoid Content, and Antioxidant Activity of Multi Bulb and Single Bulb Black Garlic
Full text linkBlack garlic is produced by processing multi-bulb garlic (Allium sativum) or single-bulb garlic in high temperature and high humidity for several days. Black garlic has many health benefits, such as an antioxidant activity resulting from its compound, including groups of flavonoid and phenolic compounds. This study aimed to analyze the effect of aging time on multi-bulb and single-bulb black garlic on the content of total phenolic, flavonoid, and antioxidant activity. Black garlic was processed at a 60-70°C heating temperature and 70-80% relative humidity for 25 days. Determination of total phenol and flavonoid contents was conducted using spectrophotometric methods with gallic acid as a standard of total phenolic and quercetin as a standard of flavonoid, while the antioxidant activity was determined by DPPH radical reduction. The results showed that total phenolic contents (% w/w GAE), flavonoids contents (% w/w QE), and EC50 values at 0 until day 25 increased on a particular day in multi-bulb and single-bulb black garlic. The optimal total phenolic content of both black garlic was obtained by heating for 20 days, flavonoid content of multi-bulb garlic for 10 days, and single-bulb black garlic for 15 days. Highest antioxidant activity was obtained on days 20 and 25 for single-bulb black garlic and multi-bulb black garlic, respectively. The aging time of black garlic affects total phenolic, flavonoid content, and antioxidant activity. In general, longer processing time caused an increase in the total phenolic content, flavonoid content, and antioxidant activity of both black garlics. Multi-bulb black garlic showed higher phenolic or flavonoid content and antioxidant activity than single-bulb black garlic