scholarly journals PHYSICOCHEMICAL AND SENSORY CHARACTERISTIC OF STARFRUIT-RED GUAVA FRUIT LEATHER AS AFFECTED BY THE ADDITION OF ARABIC GUM

2021 ◽  
Vol 84 (1) ◽  
pp. 11-19
Author(s):  
Rahmawati Farasara ◽  
Kharimatul Fachriah
Keyword(s):  
Tensile Strength ◽  
Vitamin C ◽  
Water Activity ◽  
Ph Value ◽  
Crude Fiber ◽  
Arabic Gum ◽  
Sensory Test ◽  
Guava Fruit ◽  
Total Bacteria ◽  
Total Yeast

Fruit leather is one of the processed fruit products. It’s shaped similar to thin sheets that can be rolled, has an elastic texture, and has a specific flavour. One of the suitable fruit that can be processed to fruit leather is starfruit and guava. The aim of this research was to study the physicochemical and sensory characteristics of the fruit leather made from starfruit (Dewa variety) and guava which were added with Arabic gum with different concentration (0%, 0.5%, 1%, 2%, and 2.5%). Data were analyzed by analysis of variance (ANOVA) at α = 0.05. The result showed that the addition of Arabic gum had a significant effect on tensile strength, water, ash, vitamin C content, and pH value, but it did not has a significant effect on crude fiber, water activity content, total bacteria, and total yeast and mold. While the addition of Arabic gum had a significant effect on color and texture sensory test. The best fruit leather was determined based on the physicochemical and sensory test, and it showed that the addition of 0.5% Arabic gum was the best. Characteristics of the best starfruit and guava fruit leather were tensile strength value 437.38 gf, water content 7.38%, ash content 2.02%, vitamin C content 77.08%, crude fiber content 1.85%, pH value 4.22, water activity value 0.48 , total bacteria < 2.5 CFU/g, total yeast and mold < 1 CFU/g with golden yellow color, slightly strong starfruit aroma, strong starfruit flavor, and elastic fruit leather texture.

scholarly journals The physicochemical characteristics of gandaria (Bouea macrophylla) leather with sugar concentration treatment

2021 ◽  
Vol 883 (1) ◽  
pp. 012086
Author(s):  
V N Lawalata
Keyword(s):  
Tensile Strength ◽  
Vitamin C ◽  
Water Content ◽  
Water Activity ◽  
Physicochemical Characteristics ◽  
Total Sugar ◽  
Sugar Concentration ◽  
Total Acid ◽  
Added Sugar ◽  
Randomized Design

Abstract Gandaria leather is a kind of fruit leather processed by gandaria fruit in the form of thin sheets with a thickness of 2-3 mm and has a specific consistency and taste according to gandaria fruit. The purpose of this study was to determine the effect of added sugar on the physicochemical characteristics of gandaria leather. This study used a single-factor completely randomized design, with 0%, 5%, 10%, and 15% sugar concentrations. The results showed that the sugar concentration had a very significant effect on the parameters of water content, total sugar, total acid, vitamin C, and water activity (aw), and had a significant effect on the tensile strength of gandaria leather. The physicochemical characteristics of gandaria leather from various sugar concentration treatments are as follows: water content (14.05% -20.13%), total sugar (80.56% - 84.90%), total acid (3.10 - 12.37 mg/100g), vitamin C (59.44 - 78.48 mg/100g), water activity (0.48 - 0.62), and tensile strength (0.20-0.37 N). The resulting gandaria leather qualifies as good fruit leather, and the treatment with a 10% sugar concentration is recommended for gandaria leather which has the potential to be developed and commercialized.

scholarly journals KARAKTERISTIK FISIK, KIMIA DAN ORGANOLEPTIK VEGETABLE LEATHER CABAI HIJAU (Capsicum annuum var. annuum) DENGAN PENAMBAHAN BERBAGAI KONSENTRASI PEKTIN

2017 ◽  
Vol 10 (1) ◽  
pp. 21
Author(s):  
Putri Devi Permatasari ◽  
Nur Her Riyadi Parnanto ◽  
Dwi Ishartani
Keyword(s):  
Tensile Strength ◽  
Vitamin C ◽  
Moisture Content ◽  
Water Activity ◽  
Thin Sheet ◽  
Concentration Addition ◽  
Significance Level ◽  
Physical Chemical ◽  
Organoleptic Characteristics ◽  
Randomized Design

<p><em>Vegetable leather is a thin sheet-shaped product made of vegetables (puree) are processed by drying method. Green chilli contains high vitamin C, low calories value 23 cal/100 gr and contain fibers which is quite high as 1.3 g/100 g. In this study, pectin hydrocolloid was added to improve less plastic texture in vegetable leather. The purpose of this research is to identify the influence of the variation concentration of pectin against physical characteristics (tensile strength), chemical (water activity, moisture content, ash contain, vitamin C, fiber and calories value) and organoleptic (colour, flavour, taste, texture, and overall) vegetable leather green chilies as well as knowing the best concentration of pectin that based on physical, chemical and organoleptic characteristics of vegetable leather green chilies. Experimental design used in this research was Completely Randomized Design (CRD) based upon one factor which was the effects of pectin concentration addition. Research data were analyzed by one way ANOVA method and continued using DMRT analysis on the significance level α = 0.05,  if there were significant differences between the means. The result showed that variations in the concentration of pectin have significant effect on water activity, moisture content, ash contain, and fiber. However, the variations of pectin concentration does not affect the value of tensile strength, vitamin C and calories value. Based on the analysis of physical, chemical, and organoleptic shows the vegetable leather green chili with the addition of 0.3% pectin is the best formula. Vegetable leather green chilies with 0.3% pectin concentration has tensile strength 4.6866 N, water activity 0.55, moisture content (wb) 14.959%, ash contain (db) 19.209%, food fiber (db) 15.795%, calories value 3.015,551 cal/g.  </em></p>

scholarly journals Proximate Analysis of Kijing Taiwan Carcass (Anodonta woodiana) in Wet and Dry Forms

2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Nurrahmi I Saiful ◽  
Cyska Lumenta
Keyword(s):  
Chemical Composition ◽  
Vitamin C ◽  
Proximate Composition ◽  
Scientific Information ◽  
Nutrient Content ◽  
Proximate Analysis ◽  
Crude Fiber ◽  
Fish Feed ◽  
Field Practice ◽  
Anodonta Woodiana

Field practice activities conducted in laboratory incluiding the process of carcass removal from its shells was done in the Laboratory of Nutrition and Fish Feed Technology, and also analysis of Kijing Taiwan carcass chemical composition was done in the Research and Industrial Standardization Institute of Manado. The purpose of field practice are: Analyzing the Proximate composition, Vitamin C, Calcium, and Energy of Kijing Taiwan carcass taiwan in wet and dry form. Providing scientific information about the nutrient content of Kijing Taiwan in wet and dry form. Acquire skills in operating the Proximate instruments of Vitamin C, Calcium, and Energy in the laboratory. Based on the results of the Kijing Taiwan (Anodonta woodiana) carcass proximate analysis  in wet form, the data showed, 11.59% of protein, 80.66% of water, 0.26% of fat, 3.06% of ash, 0.23% of crude fiber, 4.20% of carbohydrate, 65.5 kcal of energy, 0.59% of calcium, 3.86 mg/100 g of Vitamin C. While the dry form of the data showed, 54.84% of protein, 12.18% of water, 4.08% of fat, 14.92% of ash, 0.53% of crude fiber, 13.45% of carbohydrates, 309.88 kcal of energy, 0.55% of calcium, 14.88% of vitamin C mg/100 g. Keywords: Carcass,  Anodonta woodiana, proximate analysis, vitamin C, calcium, and energy

scholarly journals IDENTIFIKASI KOMPONEN ISOFLAVONOID PADA BUAH BALANGKASUA (Lepisanthes alata (Blume) Leenh.)

2019 ◽  
Vol 44 (2) ◽  
pp. 205
Author(s):  
Susi Susi
Keyword(s):  
Vitamin C ◽  
Rural Areas ◽  
Research Result ◽  
Nutrient Content ◽  
Crude Fiber ◽  
Total Acid ◽  
Growth Area ◽  
Phytochemical Compounds ◽  
Low Levels ◽  
Peel Extract

Balangkasua (Lepisanthes alata (Blume) Leenh.) is one of the exotic fruit typical of South Kalimantan, there are two kinds are yellow and purple-peel. This exotic fruit is still relatively low levels of consumption, this is because the harvest period is very short, not yet commercially grown, the growth area is in rural areas that are generally difficult to reach by public. Though the content of the nutritional value and phytochemical compounds that can be utilized. This research was aimed to determine the nutrient content in the pulp and peel and identify isoflavonoid component in the methanol extract of peel, pulp and seeds of purple peel balangkasua. Research result showed that pulp balangkasua contain protein of 8.40%, crude fiber of 21.76%, total acid of 26.90 mg KOH / g as well as vitamin C of 41.50 mg / 100 g, whereas in peel has a protein content of 4.20%, crude fiber of 37.83%, total acid of 13.47% and vitamin C of 38 mg/100 g).  Balangkasua was detected contain isoflavonoid compound there were equol and daidzein in seed, pulp was contained genestein, equol and genistin, and in the peel extract was contained genestein.

scholarly journals Prediction of Physicochemical Properties of Pummelo Juice Concentrates as a Function of Temperature and Concentration

2008 ◽  
Vol 4 (7) ◽  
Author(s):  
Nyuk L Chin ◽  
Suit M Chan ◽  
Yus Aniza Yusof ◽  
Teong Guan Chuah ◽  
Rosnita A Talib
Keyword(s):  
Vitamin C ◽  
Moisture Content ◽  
Physicochemical Properties ◽  
Water Activity ◽  
Fruit Juice ◽  
Multiple Linear Regressions ◽  
Processing Industry ◽  
Juice Processing ◽  
Physical Composition ◽  
Linear Regressions

The properties of pummelo juice were studied by measuring its chemical and physical composition. Pummelo fruit juice was freeze-concentrated to a concentration varying from 10 to 50 °Brix for investigation at temperature ranging from 6 to 75 °C. The fresh pummelo juice compositions in terms of moisture content, ash, fat, protein, fibre, carbohydrates, and vitamin C are comparable to existing literature. The water activity, pH and acidity were predictable linearly by its concentration measured in °Brix. The density of pummelo juice was well-predicted using linear regressions with a single parameter (i.e., concentration), giving R2>0.983 and with a temperature at R2>0.921. The density of pummelo juice showed stronger dependence on its concentration than on the temperature. With multiple linear regressions, the density could be predicted by the equation, with an R2 of 0.9877. As such, these predictions are useful in the juice processing industry as densities variant by concentration and temperature are important during the pasteurization process.

scholarly journals PENGARUH PERBEDAAN BAHAN PENYAMAK TERHADAP KUALITAS KULIT IKAN PARI MONDOL (Himantura gerrardi) TERSAMAK The Effect of Different Tanning Materials towards Leather Quality of Tanned Mondol Stingray (Himantura gerrardi)

2016 ◽  
Vol 11 (2) ◽  
pp. 140
Author(s):  
Tika Kusmaryanti ◽  
Ratna Ibrahim ◽  
Putut Har Riyadi
Keyword(s):  
Tensile Strength ◽  
Moisture Content ◽  
Ph Value ◽  
Block Design ◽  
Shrinkage Temperature ◽  
Quality Requirements ◽  
Tear Strength ◽  
Randomized Block Design ◽  
Significant Difference

ABSTRAK   Usaha penyamakan kulit ikan Pari umumnya dilakukan oleh usaha kecil menengah dan hanya menggunakan metode aldehid dengan bahan samak formalin, Selain itu juga belum diketahui kualitas kulit ikan Pari Mondol tersamak yang menggunakan bahan samak krom. Penelitian ini bertujuan untuk mengetahui pengaruh perbedaan penggunaan jenis bahan penyamak terhadap kualitas fisik dan kimiawi kulit ikan Pari Mondol tersamak. Materi penelitian berupa kulit ikan Pari Mondol (Himantura gerrardi) dan bahan samak. Penelitian dilakukan dengan metode eksperimental laboratoris. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok dengan perlakuan bahan samak yang berbeda, yaitu formalin, krom, dan kombinasi. Masing-masing perlakuan diulang tiga kali. Variabel mutu yang diamati adalah kekuatan tarik, kemuluran, kekuatan sobek, ketebalan, suhu kerut, ketahanan bengkuk (bengkok), pH dan kadar air. Data dianalisis menggunakan ANOVA dan perbedaan diantara perlakuan diuji dengan Uji Tukey. Hasil penelitian menunjukkan bahwa perbedaan bahan penyamak menyebabkan pengaruh nyata terhadap nilai kekuatan tarik, kekuatan sobek dan ketebalan tetapi tidak memberikan pengaruh nyata terhadap nilai pH, kadar air dan ketahanan bengkuk. Produk yang terbaik yaitu kulit ikan Pari Mondol yang disamak dengan bahan samak kombinasi antara krom dan mimosa, yang sebagian persyaratan mutunya sudah memenuhi persyaratan mutu kulit ikan Pari tersamak menurut SNI 06-6121-1999.   Kata kunci: Kualitas, kulit Ikan Pari, penyamak     ABSTRACT  Meanwhile the quality of Stingray tanned leather which using chrome tannin materials was not yet known. This research aims to determine the effect of different types used tannin materials towards physical and chemical quality of Stingray leather quality. The materials used in this research isStingray (Himantura gerrardi) skin and tannin materials. The study was conducted with laboratory experimental method. The experiments was designed according to the Randomized Block Design with different tanning materials (formalin, chrome, and chrome-combination). Each treatment was done with in triplicate. The quality variables that measured were tensile strength, elongation, tear strength, thickness, shrinkage temperature, bent resistance, pH and moisture content. Data were analyzed using Analysis of Variance. To find the difference between treatments, the data were tested with Honestly Significant Difference Test . The results showed that various of tannin materials gave significant effects to the values of tensile strength, tear strength and thickness however there was not any significant effect on bent resistance, moisture content and pH value. The best product were Stingray tanned leather with chrome-combination tannin material, which partially quality requirements has been comply with Stingray tanned leather quality requirements according to SNI. Keywords: Quality, stingray skin, tanning

Nutritional and Microbial Changes During Production of Tostones (Fried Plantains)

1981 ◽  
Vol 44 (1) ◽  
pp. 55-58
Author(s):  
R. J. ALVAREZ ◽  
J. A. KOBURGER ◽  
H. APPLEDORF
Keyword(s):  
Water Activity ◽  
Nutritional Quality ◽  
Fat Content ◽  
Moisture Loss ◽  
Crude Fiber ◽  
Penicillium Species ◽  
Large Segment ◽  
Zn Content ◽  
Salt Brine

Tostones (fried plantains) are consumed by a large segment of the Latin population in Florida. In addition, their use in specialty restaurants is on the increase. However, little is known about the microbial and nutritional quality of this product, particularly as affected by processing. Tostones are prepared by peeling and cutting the plantains into slices; soaking slices in a salt brine; frying, drying and flattening the slices; and refrying them until golden brown. Protein, ash, crude fiber and carbohydrate content increased during preparation as a result of moisture loss during processing. Fat content increased due to uptake during frying. Phosphorus, Na, Hg, Se and Zn content also increased, whereas that of K and Fe decreased. Changes in water activity and pH were not significantly pronounced. Bacillus and Penicillium species were the only organisms isolated from laboratory-prepared samples. The finished product contained 48.0% carbohydrate, 26.5% moisture, 21.5% fat, 2.5% protein, 1.0% ash, 0.5% crude fiber and 395 Kcal/100 g.

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