scholarly journals Optimization of parameters affecting dealcoholization of anthocyanin extract by liquid emulsion membrane using response surface methodology

2021 ◽  
Vol 19 (6) ◽  
pp. 562-574
Author(s):  
Prakash Binnal ◽  
Rajashekhara S. ◽  
Jagadish Patil
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Suitable Model ◽  
Central Composite Rotatable Design ◽  
Design Expert ◽  
Optimum Parameters ◽  
Response Surface Plot ◽  
Surface Plot ◽  
Liquid Emulsion ◽  
Central Composite

Colour is one of most important properties of foods and beverages and is a basis for their identification and acceptability. Anthocyanin from red cabbage was extracted using 50 % ethanol. The extract was dealcoholized by Liquid Emlusion Membrane technology (LEM). Parafin oil was used as a solvent, lecithin was used as a surfactant and water as stripping medium. Response surface methodology (RSM) was used to design the experiments. A total of 30 experiments were conducted in accordance with central composite rotatable design. Design expert 8 was used to design the experiments. % extraction of alcohol in each case was determined. A suitable model was fitted to experimental data by regression analysis (R-square=0.93). Response surface plot were analysed and optimum parameters for dealcoholization were found to be speed=365.44 rpm, time=18.62 min, concentration of lecithin=2.84 %, feed to emulsion ratio=3.05. A maximum dealcoholisation of 18.63 % was observed under these conditions

Development of compressed meat based bar using response surface methodology

2017 ◽  
Vol 2 (2) ◽  
pp. 226
Author(s):  
K. Jayathilakan ◽  
Rajkumar Ahirwar ◽  
Khudsia Sultana ◽  
M. C. Pandey
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Applied Pressure ◽  
Quadratic Model ◽  
Central Composite Rotatable Design ◽  
Protein Percentage ◽  
Overall Acceptability ◽  
Protein Levels ◽  
Hedonic Scale ◽  
Central Composite

<p>Studies were carried out to optimize the percentage of ingredients for the development of ready to eat mutton bar. Central composite rotatable design of response surface methodology (RSM) was used for designing the experimental combinations. Matrix for compression was designed by selecting factors like mutton powder, binders and applied pressure. Protein percentage, hardness and over all acceptability (OAA) were taken as responses. OAA and hardness showed highly significant and fitted with quadratic model whereas other response i.e. protein levels found to be significant and fitted with linear model. From the design of experiments 45g/100g of mutton powder with 5g/100g binders having an applied pressure of 142 kg/cm<sup>2</sup> yielded a bar having a protein percentage of 35g/100g with a hardness of 20.9 N with an overall acceptability score of 8.6 ±0.2 on a 9 point hedonic scale. The product gives energy of 393 kcal per 100 g.</p>

scholarly journals Pengaruh Konsentrasi CaCl2 Dan Alginat Terhadap Karakteristik Analog Bulir Jeruk Dari Alginat

2015 ◽  
Vol 10 (2) ◽  
pp. 163
Author(s):  
Rosmawaty Peranginangin ◽  
Anna Mardiana Handayani ◽  
Dina Fransiska ◽  
Djagal W. Marseno ◽  
Supriyadi Supriyadi
Keyword(s):  
Response Surface Methodology ◽  
Central Composite Design ◽  
Response Surface ◽  
Software Design ◽  
Design Expert ◽  
Central Composite

Alginat memiliki sifat dapat membentuk gel dengan adanya ion Ca2+, yang dapat dimanfaatkan sebagai bahan dasar pembuatan bulir jeruk analog. Tujuan penelitian ini adalah untuk mendapatkan konsentrasi alginat dan CaCl2 yang optimum dalam pembuatan bulir jeruk analog  dengan menggunakan response surface methodology (RSM) dan mempelajari karakteristik bulir jeruk analog yang dihasilkan. RSM dengan central composite design (CCD) pada software Design Expert 7 (DX 7) digunakan dengan variasi konsentrasi alginat dan konsentrasi CaCl2 sebagai variabel. Parameter yang diamati pada analog bulir jeruk meliputi kekuatan gel, viskositas, sineresis, dan pH. Selain itu juga diamati kadar air, kadar abu, kadar serat, dan uji sensoris (hedonik skala 5). Analog bulir jeruk disimpan dalam larutan sari jeruk  selama 1 bulan dengan pengamatan berat dan warna periode per minggu. Optimasi dilakukan dengan menggunakan program DX 7 (RSM) dan 5 kali ulangan pada bulir jeruk yang dibuat dari alginat 0,8% dan CaCl2 0,5%.  Analog bulir jeruk yang dihasilkan memiliki kekuatan gel 130,29 g/cm2; viskositas larutan 118,6 cPs; sineresis 43,47% dan pH 3,99; sedangkan kadar air 94,05%; kadar abu 0,35%; kadar serat 2,46%. Hasil uji hedonik skala 5 pada analog bulir jeruk  memiliki nilai yaitu mendekati suka untuk tekstur (3,73), suka untuk kenampakan (4) dan antara agak suka hingga suka untuk rasa (3,53). 

scholarly journals Stabilisasi Bekatul Dengan Ekstruder Ulir Ganda Menggunakan Response Surface Methodology

2017 ◽  
Vol 10 (1) ◽  
pp. 27
Author(s):  
Ineke Kusumawaty ◽  
Dedi Fardiaz ◽  
Nuri Andarwulan ◽  
Sri Widowati ◽  
Slamet Budijanto
Keyword(s):  
Response Surface Methodology ◽  
Central Composite Design ◽  
Response Surface ◽  
Design Expert ◽  
Central Composite

Keterbatasan pemanfaatan bekatul dalam pangan disebabkan oleh sifatnya yang mudah tengik sehingga perlu dilakukan stabilisasi. Penelitian ini bertujuan menentukan kondisi optimum stabilisasi bekatul dengan ekstruder ulir ganda tanpa <em>die</em> sebagai bahan bakuekstraksi protein. Optimasi kondisi stabilisasi bekatul dilakukan dengan menggunakan<em> response surface methodology</em> (RSM) dengan <em>central composite design</em> (CCD)dua faktor yaitu X1 (suhu/oC) dan X2 (kecepatan ulir/Hz).Pengolahan data menggunakan program <em>Design Expert 7.0<sup>®</sup></em> yang memberikan model persamaan pengaruh suhu dan kecepatan ulir ekstruder terhadap respon kadar air, kadar protein terlarut, dan aktivitas lipoksigenase. Hasil optimasi memberikan kondisi suhu ekstrusi 130,96oC dan kecepatan ulir 26,65 Hz. Bekatul yang dihasilkan memiliki kadar air 7,02%, kadar protein terlarut 2,04%(bk), aktivitas lipoksigenase 0,007?mol/menit/ml, dan stabilitas oksidatif yanglebih tinggi yaitu 20,00 jam daripada bekatul yang tidak distabilisasi 13,50 jam.

scholarly journals The Brazilian Way to Consume acai: Do guarana Extract and Sugar Concentrations Influence on Acceptance?

2013 ◽  
Vol 3 (1) ◽  
pp. 39
Author(s):  
Gabriela Montenegro ◽  
Karen S. Pereira ◽  
Lauro Melo
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Critical Value ◽  
Consumer Acceptance ◽  
Central Composite Rotatable Design ◽  
Optimal Conditions ◽  
F Test ◽  
Sensory Acceptance ◽  
Amazon Estuary ◽  
Central Composite

<p class="Normal1"><em>A</em><em>c</em><em>a</em><em>i</em> is a palm widely distributed in the Amazon estuary floodplains. The edible pulp of acai fruits is commonly macerated with water to produce a thick, purple beverage of creamy texture, oily appearance, and characteristic flavor. Depending on the Brazilian region, the acai based-product is prepared adding sugar and <em>guaran</em><em>a</em> extract, but their ideal proportions have never been determined in order to optimize consumers’ sensory acceptance. This research investigated these concentrations using response surface methodology (RSM) based on a five-level, two variable central composite rotatable design (CCRD). Dependent variable was consumer acceptance (flavor, texture and overall liking) and results were analyzed by multivariate regressions. Analyses of Variance (ANOVAs) showed significant models – F-test values (29.3 for flavor, for texture 37.8 and 30.4 for overall liking) higher than the critical value of 4.35 (d.f. = 3; p &lt; 0.05; R<sup>2</sup> of 0.926 for flavor, 0.942 for texture and 0.929 for overall liking). Acceptance models are presented (significant parameters). Results showed that guarana extract has a stronger influence (negative) on acceptance compared to sugar (positive), both not on optimal conditions yet. Therefore, more studies are needed in order to optimize acai acceptance.</p>

IMPLEMENTATION OF RESPONSE SURFACE METHODOLOGY TO CREATE AN OPTIMUM BIODIESEL POWER PLANT DERIVED FROM EMPTY FRUIT BUNCHES

2021 ◽  
pp. 1-31
Author(s):  
Somboon Sukpancharoen ◽  
poj hansirisawat ◽  
Thongchai Srinophakun
Keyword(s):  
Carbon Dioxide ◽  
Power Generation ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Design Expert ◽  
Empty Fruit Bunches ◽  
Optimum Parameters ◽  
Product Separation

Abstract This study examined product separation in biodiesel power plants to optimise the process. Response Surface Methodology (RSM) was used to identify the optimum parameters for the process of separation, to maximise profitability while also reducing carbon dioxide emissions. The mass and energy balance was assessed using Aspen Plus software, while RSM was carried out with Design-Expert software. Development of the characteristic equation determined that the model for gasoline yield, power generation, and carbon dioxide emissions was significant at the 95% confidence level. The R-squared value predicted by the model was found to be 0.97–1.00. In an optimal plant, profit can rise by 3,836 USD over the year, while carbon dioxide emissions decline annually by 17.97 tons.

scholarly journals Densification and volumetric change during supersolidus liquid phase sintering of prealloyed brass Cu28Zn powder: Modeling and optimization

2014 ◽  
Vol 46 (1) ◽  
pp. 23-35 ◽  
Author(s):  
A. Mohammadzadeh ◽  
M. Azadbeh ◽  
Sabahi Namini
Keyword(s):  
Response Surface Methodology ◽  
Liquid Phase ◽  
Response Surface ◽  
Three Dimensional ◽  
Liquid Phase Sintering ◽  
Central Composite Rotatable Design ◽  
Volumetric Change ◽  
Short Period ◽  
Central Composite ◽  
Rotatable Design

An investigation has been made to use response surface methodology and central composite rotatable design for modeling and optimizing the effect of sintering variables on densification of prealloyed Cu28Zn brass powder during supersolidus liquid phase sintering. The mathematical equations were derived to predict sintered density, densification parameter, porosity percentage and volumetric change of samples using second order regression analysis. As well as the adequacy of models was evaluated by analysis of variance technique at 95% confidence level. Finally, the influence and interaction of sintering variables, on achieving any desired properties was demonstrated graphically in contour and three dimensional plots. In order to better analyze the samples, microstructure evaluation was carried out. It was concluded that response surface methodology based on central composite rotatable design, is an economical way to obtain arbitrary information with performing the fewest number of experiments in a short period of time.

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