scholarly journals Optimization of Cassava (Manihot esculenta Crantz)– Wheat (Triticum aestivum) Bread with Alpha-amylase and Xylanase

2018 ◽  
Vol 12 (1) ◽  
pp. 1-17
Author(s):  
Ronalyn Veril ◽  
◽  
Felix Amestoso ◽  
Keyword(s):  
Cross Product ◽  
Mean Value ◽  
Composite Flour ◽  
Local Market ◽  
Target Market ◽  
Manihot Esculenta Crantz ◽  
Overall Acceptability ◽  
Acceptability Rating ◽  
Hedonic Scale ◽  
General Acceptability

The combination action of α-amylase, xylanase, and composite flour was analyzed to determine their effects on the sensory quality of bread through optimization using Central Composite Design (CCD) of the Response Surface Methodology. Fifteen bread formulations containing different concentrations of α-amylase (0, 0.0005, and 0.003% w/w), xylanase (0, 0.001 and 0.003% w/w), and composite flour (15, 30, 45%w/w) were used in the experiment. The study revealed that α-amylase significantly influenced the response of crust color, crumb structure, flavor, and general acceptability of the bread. The presence of xylanase caused a change in the response of crust color, crumb texture, and the general acceptability only. However, its cross product interaction with composite flour level affected the response of crust color, crumb texture and structure, flavor, and the overall acceptability of the product. The synergistic effect of α-amylase and xylanase displayed a positive effect on the overall acceptability of the bread. The optimum formulation set at acceptability rating of >7.20 on the 9-point Hedonic scale was determined at 38% composite flour with 0.002% α-amylase and 0.0012% xylanase with a cost of P41.14 per 421.27g of loaf. The observed acceptability mean for all sensory attributes of the formulation was not significantly different from the predicted acceptability mean value of the model according to the verification test. This formulation was not significantly different from the commercial bread available in the local market of Baybay City, Leyte based on the consumer acceptance results with children and adults as potential target market.

scholarly journals Chemical Composition and Organoleptic Properties of Bread Produced From Composite Flower Mix of Triticum aestivum and Manihot esculenta Crantz (P04-023-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Too-Chukwu Okere ◽  
Patrick Ogbonna ◽  
Obinna Adumanya ◽  
Chidimma Ajuru ◽  
Charles Nkwoala ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Chemical Composition ◽  
Manihot Esculenta ◽  
Composite Flour ◽  
Chemical Compositions ◽  
Organoleptic Properties ◽  
Crude Fibre ◽  
Manihot Esculenta Crantz ◽  
Overall Acceptability ◽  
Sensory Score

Abstract Objectives This work evaluated the chemical composition and organoleptic properties of bread produced from composite flour of wheat (Triticum aestivum) (W) and yellow cassava (Manihot esculenta Crantz) (Yc). Methods Raw yellow cassava from Imo State Polytechnic farm was processed into flour using the method of Singh (2008) while already processed plain wheat flour (Golden Penny brand) and other ingredients were purchased from relief Market Owerri. Standard recipe was used in making the bread in different ratios. Standard methods were used to assay the chemical compositions while organoleptic attributes were determined using a 9-point hedonic scale on the bread produced from composite mix of wheat (W) and yellow cassava (Yc) flours at varied ratios. The chemical components evaluated were moisture, ash, fat, crude fibre, protein, carbohydrate and pro-vitamin A, while the organoleptic properties assayed were crust colour, flavor, taste, crumb texture and overall acceptability. The W: Yc flours mix ratios were 70%: 30%, 80%: 20%, 90%: 10% and 100% wheat respectively as the control, while data collected were analyzed using one way ANOVA. Results The results (Table 1) revealed that carbohydrate value ranged from 61.83% to 63.27%, protein 2.83% to 3.92%, fat 14.86% to 17.86% while crude fibre was 1.01% to 1.99%. Protein value was highest (3.92%) in sample D (100%) while sample B (80%W: 20% Yc) had the least fat content (14.86%). Crude fibre content differed significantly (P˂0.05) among the samples. The provitamin A values (Table 1) increased with increased levels of yellow cassava flour with highest value (0.23%) found in sample A (70%W: 30% Yc). Sensory properties were significantly different (P < 0.05) on all attributes and overall acceptability, while sensory score for crust colour of the bread samples varied insignificantly (P > 0.05) (Table 2). Generally, sample C (90%W: 10% Yc) having 8.10 score for overall acceptability was most preferred (Table 2). Conclusions The results showed that bread produced from wheat and yellow cassava composite flour mix had improved nutritional and organoleptic properties. Funding Sources Self funded by authors.

scholarly journals Evaluation of cookies produced from blends of wheat, cassava and cowpea flours

2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Abiodun Adekunle Olapade ◽  
Mary Abimbola Adeyemo
Keyword(s):  
Protein Content ◽  
Wheat Flour ◽  
Manihot Esculenta ◽  
Pasting Properties ◽  
Composite Flour ◽  
Manihot Esculenta Crantz ◽  
Nutritional Factors ◽  
Cassava Flour ◽  
Overall Acceptability ◽  
Composite Flours

Cassava (Manihot esculenta Crantz) and cowpea (Vigna unguiculata L. Walp) were processed into flours and used to substitute wheat flour for preparation of cookies. The chemical, including proximate composition and anti-nutritional factors, and functional and pasting properties of the blends were determined. Cookies were produced from the blends with 100% wheat flour as a control. The anti-nutritional factors, physical properties and organoleptic attributes of the cookies were evaluated. An increase in the level of cassava flour substitution resulted in a decrease in the protein content of the composite flour. However, addition of cowpea flour resulted in an increase in the protein content. There were significant (p<0.05) reductions in the studied anti-nutritional factors after baking. Cookies from composite flours were not significantly (p>0.05) different from the control in overall acceptability. This indicates the feasibility of producing nutritious cookies with desirable organoleptic qualities from cassava, wheat and cowpea composite flour.

PSXV-28 Late-Breaking: Impact of beef genotypes and finishing systems on beef consumer acceptability and the effect of demographic factors on consumer sensory preferences

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 380-380
Author(s):  
Isabella Cristina F de Faria Maciel ◽  
Jeannine P Schweihofer ◽  
Jenifer I Fenton ◽  
Jennifer Hodbod ◽  
Melissa McKendree ◽  
...  
Keyword(s):  
Demographic Factors ◽  
Sensory Attributes ◽  
Consumer Perceptions ◽  
Eating Quality ◽  
Consumer Acceptability ◽  
Overall Acceptability ◽  
Beef Steaks ◽  
Red Angus ◽  
Hedonic Scale ◽  
Demographic Effects

Abstract Beef genotypes and diets can improve the eating quality and consistency of beef. A 2-yr study was conducted to evaluate the effects of beef genotypes and diet on consumer acceptability of beef. Steaks were from Red Angus (RA) and RA x Akaushi (AK) crossbreed, fed one of two finishing systems: grazing (GRASS) and feedlot (GRAIN). Consumers (n = 105 in each year) evaluated cooked steaks for flavor, tenderness, juiciness, and overall acceptability using a 9-point hedonic scale. Demographical information was collected and used as covariates in the statistical model. There was no difference in sensory attributes (P &gt; 0.05) between the genotypes, except that steaks from AK tended to be juicier than RA (P = 0.06). Sensory attributes were scored better in GRAIN than GRASS beef (P &lt; 0.01) for all variables. There was a genotype by system interaction for flavor (P = 0.02), where beef from RA had a lower flavor rating in GRASS than in GRAIN, and no difference was observed for AK. Demographic effects showed that gender and beef consumption location had significant effects on flavor. Flavor scores were higher for females than males (6.1 vs 5.7, P = 0.02), and higher from consumers who eat beef in restaurants than consumers who do not eat beef in restaurants (6.6 vs 5.3, P &lt; 0.01). Juiciness scores were impacted by the frequency of beef consumption. Panelists who eat beef once every 2–3 weeks rated the steaks juicier than those who eat beef once every 2–3 months (6.5 vs 4.3, P = 0.04), and consumers who eat grass-fed beef twice a year rated the steaks worse than those who eat it less than once a year (P = 0.02). Our results suggest that the beef finishing system had a marked impact on consumer acceptability, and AK might produce meat juicier than RA. Some demographic factors may influence consumer perceptions of beef.

scholarly journals Playing with the senses: application of box-behnken design to optimize the bukayo formulation

Food Research ◽  
2019 ◽  
pp. 833-839
Author(s):  
C.J.A. Domingo ◽  
W.M. De Vera ◽  
R.C. Pambid ◽  
V.C. Austria
Keyword(s):  
Box Behnken Design ◽  
Overall Acceptability ◽  
Lack Of Fit ◽  
Optimum Formulation ◽  
Sensory Color ◽  
Positive Correlations ◽  
Hedonic Scale ◽  
High Degree ◽  
Very High ◽  
Coconut Meat

A three-level Box-Behnken design of response surface methodology was employed to optimize the formulation of bukayo or coconut toffee based on overall acceptability sensory attribute. The independent variables were different levels of young coconut meat (250 – 500 g), sinakob (250 – 500 g), and coconut juice (250 – 500 g) with fifteen different runs of three similar center points. The analysis of variance showed that quadratically, coconut juice and sinakob showed significantly higher effect (p<0.05) on the overall acceptability of bukayo whereas the “Lack of Fit” was non-significant relative to the pure error. For optimization, the goal was to maximize the overall acceptability response. The optimum formulation conditions of 430 g young coconut meat, 400 g sinakob, and 340 g coconut juice yielded an experimental overall acceptability score of 8.04 which is close to the predicted score of 7.11 with composite desirability of 0.87 on a nine-point hedonic scale. The regression model equation for overall acceptability could predict response yield until at least 84.65% of accuracy. Box-Behnken design of RSM performed well in the optimization of the bukayo formulation with a very high degree of overall acceptability. The strong and positive correlations enable the application of colorimetry as an indication of the overall acceptability and sensory color of the bukayo product.

scholarly journals Quality Evaluation of Ogi from Acha (Digitaria exilis), Soybean (Glycine max) and Carrot (Daucus carota L.) Composite Flour

2019 ◽  
pp. 1-11
Author(s):  
Moses Terkula Ukeyima ◽  
Israel Okpunyi Acham ◽  
Comfort Temitope Awojide
Keyword(s):  
Functional Properties ◽  
Proximate Composition ◽  
Control Sample ◽  
Sensory Characteristics ◽  
Composite Flour ◽  
Soybean Flour ◽  
Overall Acceptability ◽  
Significant Difference ◽  
Constant Addition ◽  
Milk Flavor

Ogi was produced from composite flour of fermented Acha, roasted Soybean and Carrot.  The raw materials were blended in varying proportions. Proximate composition, functional properties and sensory characteristics of the formulated Ogi samples were evaluated. The results of the proximate composition showed a significant increase in moisture (5.36% to 9.94%), protein (3.94% to 16.98%), fat (1.89% to 10.23%), crude fiber (1.80% to 3.12%) and ash (0.35% to 0.99%); while a decrease was observed in carbohydrate (86.66% to 58.74%) with increase in supplementation with roasted Soybean flour and constant addition of carrot flour along with the milk flavor. The functional properties showed significant increase in foam capacity (5.99% to 7.97%), Swelling index (2.46 v/v to 3.08 v/v) and Least gelation capacity (8.10% to 14.0%); while a decrease was observed in bulk density (0.84 g/mL to 0.72 g/mL), water absorption capacity (1.40% to 1.10%) and foaming stability (3.39% to 2.79%). Sensory characteristics result revealed that there was no significant difference (p<0.05) in aroma and overall acceptability with increasing incorporation of roasted Soybean flour and constant addition of Carrot flour with milk flavor. Aside the control sample (containing 100% fermented Acha flour) there was preference for Sample C (70% fermented Acha flour: 15% roasted Soybean flour: 10% Carrot flour: 5% Milk flavor) and Sample D (60% fermented Acha flour: 25% roasted Soybean flour: 10% `Carrot flour: 5% Milk flavor) in terms of color (6.65 and 6.25), taste (6.95 and 6.35), aroma (6.45 and 6.30), mouth feel (6.10 and 6.35) and overall acceptability (6.50 and 6.50) respectively, among the blend formulations. Supplementation of fermented Acha with roasted Soybean and Carrot flour considerably increased the protein and fat contents of the blend; hence Soybean should be used for supplementation of cereal based product in order to improve their nutritional composition.

scholarly journals Microbiological Quality Analysis and Shelf Life Evaluation of Dahi Available in Kashmir

2020 ◽  
pp. 1-8
Author(s):  
Farhat Anjum ◽  
◽  
Rukhsana Rahman ◽  
Murtaza Gani ◽  
◽  
...  
Keyword(s):  
Microbiological Quality ◽  
Storage Period ◽  
Quality Analysis ◽  
Refrigerated Storage ◽  
Overall Acceptability ◽  
Titrable Acidity ◽  
Life Evaluation ◽  
Sensorial Attributes ◽  
Hedonic Scale ◽  
And Storage

Four commercially produced dahi samples were stored under 0°C, 10 °C and 20 °C temperatures subjected to microbiological examination, pH, titrable acidity and sensory attributes at various temperatures for a period of seven days. The results indicated an increase in microbial activity parameters and titrable acidity with increase in temperature and storage period. pH of dahi samples decreased with an increase in temperature and storage period indicating increase in acidity. The studies for microbiological studies shows increase in TPC along with the increase in days of storage. Similar case was found in Yeast and mould as well as in Coliform count. The TPC at refrigerated storage was observed as (1.69±0.58)106 to (5.0±0.68)106 while as at 20°C temperature it was observed as (1.5±0.35)106 to (4.5±0.12)10. Similarly the Yeast and mould count at refrigerated storage was observed as (1.0±0.92)106 while as at 20 °C temperature it was observed as ( 1.5±0.36)106 .The different samples of dahi were analysed for various sensorial attributes for their acceptance by using 9 point hedonic scale. The scores obtained with respect to colour, flavour, taste and aroma show good results and overall acceptability. Overall acceptability was also found to decrease significantly (p <.05) with increase in days of storage under refrigerated conditions. The results of the storage studies indicated the significant (p < .05) decrease in pH with the days of storage under different temperature conditions.

scholarly journals Effects of Fermented Maize Residue Addition on the Physico-chemical and Sensory Properties of Chin-Chin

2021 ◽  
pp. 65-73
Author(s):  
Owuno Friday ◽  
Achinewu Simeon Chituru
Keyword(s):  
Proximate Composition ◽  
Protein Digestibility ◽  
Pasting Properties ◽  
Absorption Capacity ◽  
Composite Flour ◽  
Crude Fibre ◽  
Overall Acceptability ◽  
Physico Chemical ◽  
Significant Difference ◽  
Pasting Temperature

Chin-Chin, a traditional Nigerian snack was prepared utilizing wheat-fermented maize residue composite flour at 0 – 30% replacement levels. Effects of this addition on the functional and pasting properties of the flour composite was evaluated. The snack produced was also evaluated for its sensory attributes, proximate composition and invitro-protein digestibility (IVPD). Functional properties results showed an increase in water absorption capacity (WAC), a decrease in oil absorption capacity (OAC), decrease in Bulk Density (BD), swelling power and solubility index with residue addition. Pasting property results showed a drop in the value of peak, trough, breakdown and final viscosity with substitution while set back viscosity increased.Peak temperature decreased, but values for pasting temperature showed no significant difference between the control and the blends. Results for sensory evaluation showed equal preference for overall acceptability. Proximate composition results showed residue addition led to an increase in crude fibre and protein content with a drop in the carbohydrate value. Residue addition did not increase protein digestibility. Addition of fermented maize residue in chin-chin production can be another way of utilizing the fibre rich by-product of the production of fermented maize starch.

scholarly journals Physico-Nutritional and Sensory Properties of Cookies Formulated with Quinoa, Sweet Potato and Wheat Flour Blends

2018 ◽  
Vol 6 (3) ◽  
pp. 798-806
Author(s):  
NIDHI CHOPRA ◽  
BHAVNITA DHILLON ◽  
RUPA RANI ◽  
ARASHDEEP SINGH
Keyword(s):  
Sweet Potato ◽  
Wheat Flour ◽  
Partial Replacement ◽  
Physical Parameters ◽  
Equal Proportion ◽  
Overall Acceptability ◽  
Spread Ratio ◽  
Hedonic Scale ◽  
Flour Blends ◽  
Quinoa Flour

The study was conducted to formulate cookies with and without partial replacement of wheat flour (W) with sweet potato (SP) and quinoa flour (Q) blends. Sweet potato flour and quinoa flour were blended in equal proportion and then incorporated at the levels of 20, 40 and 60% by replacing wheat flour to prepare cookies. The cookies formulations were: CI(Control, 100W), CII (80W+10Q+10SP), CIII (60W+20Q+20SP) and CIV (40W+30Q+30SP).The three flour types and the prepared cookies were accessed for their nutritional properties. The prepared cookies were also evaluated for their physical parameters and sensory characteristics. The nutritional profile of cookies increased with increased level of addition of sweet potato and quinoa flour. The protein, fat, fibre and ash content of cookies prepared with 60% replacement of wheat flour with sweet potato and quinoa flour blend were found to be29.3, 71.6, 51.8 and 108.3% respectively, higher than those of control cookies. The spread ratio and the thickness of cookies decreased with the addition of blended flour of sweet potato and quinoa. All the cookies were found acceptable on the hedonic scale in terms of appearance, colour, texture, flavour, taste and overall acceptability. The CII cookies were most preferred by the sensory panel with overall acceptability score of 7.8, only next to control cookies (CI) with a score of 8.

scholarly journals Quality Characteristics of Biscuits Produced from Composite Flour of Sweet Potato and Cashew Nut Flour Blends

2020 ◽  
pp. 11-22
Author(s):  
O. O. Tanko ◽  
T. O. Hussaina ◽  
N. S. Donaldben
Keyword(s):  
Sweet Potato ◽  
Absorption Capacity ◽  
Composite Flour ◽  
Crude Fibre ◽  
Overall Acceptability ◽  
Spread Ratio ◽  
Cashew Nut ◽  
Significant Difference ◽  
Swelling Capacity ◽  
Flour Blends

The research is aimed at adding value to sweet potato based biscuits using underutilized crops such as cashew nuts. The objective of the study was to add value to sweet potato based biscuits, the sweet potato was processed into flour; while the cashew nuts was unroasted cashew nuts were sorted to remove the stones, dirt’s and unwholesome cashew nuts, roasted, shelled, dried, peeled and processed into flour and sieved. The cashew nuts flour was substituted at 20, 30, 40 and 50% into sweet potato flour to produce sweet potato and cashew nuts composite flour were  used for the production of biscuits. Functional, proximate composition of the biscuits, physical and sensory properties of composite biscuits were determined. Significance difference (P<0.05) was observed Bulk density, water absorption capacity, oil absorption capacity, swelling capacity, emulsion activity, foaming stability and gelatinization temperature increased from 0.62 to 0.73 g/cm3, 1.31 to 1.81 g/g, 2.10 to 2.22 g/g, 6.42 to 7.18 ml, 59.71 to 60.51%, 6.19 to 6.43% and 68.20 to 72.10ºC, respectively with an increase in the addition of cashew nuts flour. The crude protein, crude fat, crude fibre and ash increase from 14.65 to 18.31%, 7.88 to 10.21%, 3.21 to 3.51% and 4.10 to 4.76% respectively; while the moisture and carbohydrate content of the biscuits decreased from 13.77 to 13.31% and 56.39 to 49.89%, respectively with increase in the addition of the cashew nuts flour. The physical properties of the composite biscuits such as the weight, thickness, diameter and spread ratio ranged from 16.09 to 17.45 g, 10.87 to 10.96 mm, 38.94 to 40.02 mm and 3.56 to 3.60 respectively. The average means scores for the appearance, crispness, taste, aroma and overall acceptability increase were observed. There was a significant difference (p<0.05) in the appearance, taste and aroma while there was no significant difference (p>0.05) in the crispness and overall acceptability.

Internal and external search strategies of innovative firms: the role of the target market

2018 ◽  
Vol 24 (3) ◽  
pp. 495-518 ◽  
Author(s):  
Guillermo Ruiz-Pava ◽  
Clemente Forero-Pineda
Keyword(s):  
International Markets ◽  
Search Strategies ◽  
Local Market ◽  
Target Market ◽  
Local Markets ◽  
Content Type ◽  
Innovative Firms ◽  
External Sources ◽  
Internal Sources

Purpose This paper aims to develop the concept of internal search of ideas to show the contrast between search strategies adopted by firms that introduce new products into local and international markets. Design/methodology/approach Based on data from 2,652 innovative firms, the paper uses factor analysis to explore and confirm appropriate groups of sources of innovative ideas. The analysis differentiates between internal and two types of external sources. Logistic and bivariate regressions reveal different search strategies for innovation in local and international markets. Findings Firms reporting products new to international markets exhibit search strategies combining ideas from internal sources with ideas from other firms. Firms reporting products new to local market reveal a search strategy centered on ideas from other firms. Practical implications Managers and policymakers wishing to promote innovations for international markets should concentrate their resources on developing the organizations’ capacity to generate ideas internally while monitoring other firms’ ideas. Managers targeting local markets may focus their efforts on intelligence over ideas coming from other firms. Originality/value Clarifying the relationship between knowledge and ideas, the paper finds that search strategies of firms are more effective for innovation depending on the target market. Firms searching for ideas among other firms generate ideas that might trigger innovation in products new to local markets. Firms searching both for internal and external ideas generate ideas leading to products new to international markets.

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