scholarly journals Physicochemical characteristics of wheat treated with diatomaceous earth and conventionally stored

2014 ◽  
Vol 38 (6) ◽  
pp. 546-553 ◽  
Author(s):  
Janete Deliberali Freo ◽  
Lidiane Borges Dias de Moraes ◽  
Gabriela Soster Santetti ◽  
Taís Luana Gottmannshausen ◽  
Moacir Cardoso Elias ◽  
...  

Studies show the efficacy of the use of diatomaceous earth for insect control, however, lack studies on the effects of physical and chemical properties of wheat flour added diatomaceous earth. The aim of this study was to assess the physicochemical characteristics of wheat grains treated with increasingly higher dosages of diatomaceous earth and conventionally stored for a 180-day period. Samples containing 10 kg of wheat grains were treated with 0.0, 2.0 and 4.0 g kg-1 of diatomaceous earth and then conventionally stored. Analyses of grain hectoliter mass and ash content, as well as flour gluten content, flour color, alveography and farinography were performed at 0, 60, 120 and 180 days of storage. The experiment was carried out in a totally randomized design. The grain ash content and intensity of color component L* of wheat flour increase proportionally to the application of increasing doses of diatomaceous earth and longer storage periods. The grain hectoliter mass and values of +b* chromaticity coordinate, wet gluten content and gluten content in wheat flour diminish with the application of increasing doses of diatomaceous earth and longer storage periods. The gluten strength and dough stability of flour obtained from wheat grains without addition of diatomaceous earth increase with the storage period; this behavior was not observed in treatments with the application of 2.0 and 4.0 g kg-1 diatomaceous earth. The application of increasing doses of diatomaceous earth changes the physical and chemical characteristics of wheat grains stored, with consequent reduction of the flour technological quality.

2020 ◽  
Vol 142 ◽  
pp. 03006
Author(s):  
Herlina ◽  
Nita Kuswardhani ◽  
Maria Belgis ◽  
Adinda Tiara

The purpose of this study was to determine the effect of comparative treatment of the proportion of Sodium bicarbonate and tartaric acid on the physical and chemical properties of effervescent tablets temulawak, as well as knowing the proportions of sodium bicarbonate and tartaric acid right to produce a good effervescent tablets temulawak. The research method uses a single completely randomized design namely the ratio of sodium bicarbonate: tartaric acid, (F1 = 2.0: 2.5; F2 = 2.5: 2.0; F3 = 3.0; 1.3; F4 = 3 , 5: 1,0, and F5 = 4.0: 0.5y). each treatment was repeated 3 (three) times. The resulted data were analyzed by ANOVA test. The results showed that the proportion of sodium bicarbonate and tartaric acid significantly affected color lightness, hardness, hygroscopicity, solubility times, water content, ash content, and not significantly affect viscosity and pH. The right proportion of sodium bicarbonate acid tartaric acid for making effervescent tablets temulawak is A1 treatment (proportion of sodium bicarbonate and tartaric acid 2.0: 2.5) with the attributes of water content of 66.72%, hardness of 2.20 kg, hygroscopicity of 25.43 g, solubility times of 35 seconds, viscosity 1.75 MPa.S, water content 1.19%, ash content 3.10%, and pH = 5.1.


2016 ◽  
Vol 1 (2) ◽  
pp. 121
Author(s):  
Abdul Hadi ◽  
Nadia Siratunnisak

The instant beverage product ingredients bran is a powder made from rice bran with the addition of sugar, saffron and cocoa powder. The addition of the cocoa powder bran instant drinks can enhance the flavor of drinks, so the demand by the public and boost the selling price of rice bran. This study is experimental by using bran as the manufacture of beverages physical, chemical and organoleptic. The experimental design used was completely randomized design (CRD) with 4 treatments with 3 repetitions. Based on the physical properties of rice bran instant drink water content showed that the more the addition of cocoa powder the higher the water content, pH is highest in treatment T3 (BC 250, BK 250), while the ash content is highest in the control treatment. Based on the organoleptic test of the instant beverage bran with the addition of 350, 300, 250 grams of cocoa powder to the acceptability of flavor, color, aroma and texture result of variance (ANOVA) significantly affect the taste, aroma, color, texture in instant drinks bran. The impact of the addition of cocoa powder in instant drinks bran to the taste, aroma, levels of protein, fiber, starch, pH, moisture content and ash content with a variety of treatments (T0, T1, T2, and T3). Keywords:  Rice bran, cocoa powder, physical and chemical properties


2019 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Aprizal Aprizal ◽  
Irdha Mirdhayati ◽  
Yendraliza Yendraliza

The production of halal gelatin from buffalo hide waste which is animal be slaughtered according to Islamic law and using pineapple rind as an extraction agent was an alternative to produce halal gelatin. The availability of buffalo hide in Riau Province was stable and its hide had high protein content. This research was conducted to produced and determine the characteristics of halal gelatin from buffalo hide using solution of pineapple skin in terms of their physical and chemical properties. The Completely Randomized Design (CRD) was experimental design used with consist of 3 treatments and 4 replications. The treatment was ratio hide :  pineapple rind solution, namely 3:1, 3:2 , 3:3 w/v. The parameters observed were yield, viscosity, color, pH, ash content and moisture content. The results showed that immersion of buffalo hide in the solution of pineapple rind at different ratio gave highly significant increased the viscosity and ash content of gelatin but not significant effect to yield percentage , color, pH and moisture of gelatin. The yield percentage ranging from 5.99-7.33%, pH 4.83-4.85, viscosity was 1.95-2.20 cP, color 0.54-0.71 absorbance unit, ash 0.25-, 032% and moisture 9.97-9.99%. It can be concluded that the best treatment was ratio 3:2 and 3 : 3 according to had viscosity, pH, color, ash and moisture in line with the standard of gelatin by Gelatin Manufacture Institute of America (GMIA).


2020 ◽  
Vol 8 (2) ◽  
pp. 103-109
Author(s):  
Adnan Engelen ◽  
Rahmat A Rahman ◽  
Arif Murtaqi Akhmad Mutsyahidan

This study aimed to determine the best formulation of dry noodle making from cassava flour and cassava starch and to see the physical and chemical properties of dry noodles. This study used a completely randomized design (CRD) and LSD test if there was a significant effect. The tests carried out included organoleptic tests, air content analysis, ash content analysis, color analysis and texture analysis. The results showed that the best formulation of dry noodles was a composition of 120 grams of cassava flour and 80 grams of cassava starch (M1) with a moisture content value of 9.81%, an ash content analysis of 8,7%, a color analysis of 22,1% and a texture analysis. 117,27% and had a savory taste, the aroma was not too strong and the color was a bit pale yellow.


2021 ◽  
Vol 4 (2) ◽  
pp. 324
Author(s):  
Norhikmah ◽  
Noor Mirad Sari ◽  
Muhammad Faisal Mahdie

Tapioka flour as an adhesive for coconut shell charcoal briquettes can affect the characteristics of charcoal briquettes consisting of physical and chemical properties. The purpose of this study was to determine the physical properties of coconut shell charcoal briquettes in several adhesive percentages. The method used was a completely randomized design pattern and in this study there was only one factor (factor = coconut shell charcoal and tapioca adhesive/starch), as many as 5 treatments with 3 replicatins = 15 samples to be tested. Charakteristics of coconut shell charcoal briquettes that meet ASTM standard : water content that entered ASTM standard (Max 6%) in treatment A2 (95% coconut shell charcoal + 5% tapioca adhesive), the best density is found in treatment A3 (90% coconut shell charcoal + 10% tapioca adhesive)and enter ASTM standard(1.0-1.2 g / cm3), ash content that falls within the ASTM standard (Max 18%) in treatment A3(90% coconut shell charcoal + 10% tapioca adhesive), flying substancs that comply with ASTM standard (19-28%) in treatment A3 (90% charcoal coconut shell + 10% tapioca adhesive), bonded carbon content which is included in the ASTM standard (at least 58%) in treatment A2 (95% coconut shell charcoal + 5% tapioca adhesive),and the best heating value is found in the treatment A3 ( 90% coconut shell charcoal + 10% tapioca adhesive) which falls within the ASTM standard (4000-6500 cal / g). The results of this study indicate that the percentage of tapioca adhesive can affect the characteristics of coconut shell charcoal briquetess.Keywords: Percentage of tapioca adhesive; Charcoal briquettes; Coconut shell


2017 ◽  
Vol 4 (1) ◽  
pp. 36-47
Author(s):  
R. Osae G. Essilfie J. O. Anim

The study was conducted to assess the effect of different waxing materials on the quality attributes of tomato fruits. A 2 x8 factorial experiment layout in complete randomized design with 16 treatment combinations and 3 replication was adopted.The materials that were used for the experiment are two (2) varieties of tomatoes (Pectomech and Power Rano) and seven(7) waxing material (shea butter, cassava starch, beeswax, and a combination of shea butter + cassava starch, shea butter + beeswax, cassava starch + beeswax, shea butter + cassava starch + beeswax) and a control. Results from the experiment indicated that all waxing treatments delayed the development of weight loss, firmness, pH, total soluble solids, and total titrable acidity. The results also suggested that edible wax coatings delayed the ripening process and colour development of tomato fruits during the storage period and extended the shelf life. However Beewax treatment and its combinations performed better than the other treatments. It was therefore recommended that locally produced wax such as Beewax, Shea butter, Cassava Starch treatments and their combinations could be a good technology for preserving the quality and extending the shelf life of fresh tomato fruit as well as maintaining the physical and chemical properties.


Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 768
Author(s):  
Christos Bontsidis ◽  
Athanasios Mallouchos ◽  
Antonia Terpou ◽  
Anastasios Nikolaou ◽  
Georgia Batra ◽  
...  

On the frame of this research survey, a novel potentially probiotic strain (Lactobacillus paracasei SP5) recently isolated from kefir grains was evaluated for chokeberry juice fermentation. Chokeberry juice was retrieved from the variety Aronia melanocarpa, a plant known to provide small, dark berries and to be one of the richest sources of antioxidants. The juice was subsequently fermented inoculating L. paracasei SP5 for 48 h at 30 °C. The fermented juices were left at 4 °C and tested regarding microbiological and physicochemical characteristics for 4 weeks. The potentially probiotic strain was proved capable of performing lactic acid fermentation at 30 °C. Cell viability of L. paracasei was detected in high levels during fermentation and the whole storage period, while the fermented juice showed higher levels of viability in juice with 40.3 g/L of initial sugar concentration. No ethanol was detected in the final fermented juice. Fermented chokeberry juice was characterized by aromatic desirable volatiles, which were retained in adequate levels for the whole storage period. Specifically, the occurrence of organic esters detected in fermented juices is considered as positive evidence of the provision of fruity and floral notes to the final product. During storage, total phenolics content and antioxidant activity were observed in higher levels in fermented chokeberry juice compared with non-fermented juice. Subsequently, fermentation of chokeberry juice by potentially probiotic lactic acid bacteria could provide high industrialization potential, providing the market with a nutritional beverage of good volatile quality with an enhanced shelf-life compared with an unfermented fresh juice.


Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2998
Author(s):  
Mohammed Nadeem Bijle ◽  
Manikandan Ekambaram ◽  
Edward Lo ◽  
Cynthia Yiu

The in vitro study objectives were to investigate the effect of arginine (Arg) incorporation in a 5% sodium fluoride (NaF) varnish on its physical and chemical properties including F/Arg release. Six experimental formulations were prepared with L-arginine (L-Arg) and L-arginine monohydrochloride at 2%, 4%, and 8% w/v in a 5% NaF varnish, which served as a control. The varnishes were subjected to assessments for adhesion, viscosity, and NaF extraction. Molecular dynamics were simulated to identify post-dynamics total energy for NaF=Arg/Arg>NaF/Arg<NaF concentrations. The Arg/F varnish release profiles were determined in polyacrylic lactate buffer (pH-4.5; 7 days) and artificial saliva (pH-7; 1 h, 24 h, and 12 weeks). Incorporation of L-Arg in NaF varnish significantly influences physical properties ameliorating retention (p < 0.001). L-Arg in NaF varnish institutes the Arg-F complex. Molecular dynamics suggests that NaF>Arg concentration denotes the stabilized environment compared to NaF<Arg (p < 0.001). The 2% Arg-NaF exhibits periodic perennial Arg/F release and shows significantly higher integrated mean F release than NaF (p < 0.001). Incorporating 2% L-arginine in 5% NaF varnish improves its physical properties and renders a stable matrix with enduring higher F/Arg release than control.


2021 ◽  
Author(s):  
Yun Wang ◽  
Peng Xie ◽  
Jiyun She ◽  
Aihua Deng ◽  
Shaogang Fan

Abstract Purpose: Little is known regarding the combined impact of plant and soil traits on the soil bacterial community. Herein, we assessed physical and chemical properties along with bacterial community structure in soils sampled at different depths (0–20 cm, 20–40 cm, and 40–60 cm) and slope positions (peak, hillside, and bottom), in Camellia oleifera monoculture and mixed Gardenia jasminoides–Camellia oleifera stands. Methods: Soil physicochemical characteristics were determined using standard methods. The composition of soil bacterial communities was evaluated using high-throughput sequencing of the 16S rRNA gene. Results: Soil organic carbon, humus, and total organic contents were higher in G. jasminoides + C. oleifera low-yielding forest than in other stands, however, the NH4+-N levels were significantly lower than that in monoculture. The slope position did not greatly influence soil physical and chemical properties. The dominant bacteria were Proteobacteria, Chloroflexi, Acidobacteria, and Actinobacteria. The alpha and beta diversity and abundance of soil bacterial community were higher in intercropping systems than in monoculture systems. Potassium and nitrogen levels and pH significantly affected the soil microbial community composition. Correlation analysis revealed that alkaline hydrolysable nitrogen and pH were significantly correlated with the input of plant-associated organic matter and dynamic changes of keystone taxa.Conclusion: G. jasminoides improved the physicochemical characteristics of C. oleifera low-yielding soil and greatly affected the soil bacterial community, further improving the soil microecological environment. Therefore, this specific intercropping system is an effective strategy for improving soil health.


2019 ◽  
Vol 10 (07) ◽  
pp. 776-792
Author(s):  
Gill Ali Abrar ◽  
Fanrui Zhao ◽  
Hanxiong Qin ◽  
Ji Wang ◽  
Chunlei Liu ◽  
...  

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