Search results
1 – 4 of 4Esther Gyedu-Akoto, Eric Kumi Asare, Stephen Yaw Opoku, Abu Mustapha Dadzie and Emmanuel Ofosu-Agyei
Roasted coffee provides a complex blend of different flavours which produce a range of sensory qualities. With the development of protocols for the production of fresh juices…
Abstract
Purpose
Roasted coffee provides a complex blend of different flavours which produce a range of sensory qualities. With the development of protocols for the production of fresh juices, jams and marmalades from cocoa and cashew pulp juices at Cocoa Research Institute of Ghana, this paper aims to study the effects of roasted coffee powder on fermented cocoa and cashew juices to diversify the uses of these two juices.
Design/methodology/approach
Cocoa and cashew juices were fermented with the incorporation of 2% roasted coffee powder using Saccharomyces cerevisiae yeast starter. The fermenting juices were monitored by measuring pH, temperature, specific gravity and titratable acidity. At the end of the fermentation, the juices were poured into clean, sterilized containers to mature. They were then analysed for their physicochemical, microbiological and sensory qualities. These were repeated with cocoa and cashew juices without coffee powder to determine the effects of the roasted coffee on the fermented juices.
Findings
The addition of roasted coffee powder to cocoa and cashew juices did not have any significant effect on the fermentation performance of the juices. Three out of the four juices took a total of 13 days to complete fermentation with an average final specific gravity of 0.99. The quality of the fermented juices was not compromised by microbial activities. However, the addition of roasted coffee powder reduced the alcohol content of fermented cocoa juice from 9.0 to 5.0% and that of cashew from 11.0% to 7.5%. Sensory analysis using untrained panellists, who were ordinary consumers, showed significant differences among the four fermented juices in terms of appearance, taste and aroma. Their mean scores for coffee aroma ranged from 0.3 to 2.0 with coffee incorporated fermented juices having higher rankings.
Originality/value
These findings have shown the possibility of processing cocoa and cashew juices, which under normal circumstances would have been discarded along their value chains, into coffee-flavoured wines. They are also important to cocoa, cashew and coffee farmers, processors, as well as wine enthusiasts.
Details
Keywords
Esther Gyedu-Akoto, Stephen Yaw Opoku and Emmanuel Ofosu-Agyei
Refined wheat flour is a key ingredient for preparing biscuits because of its gluten content. However, biscuits prepared from refined flour are characterised with low proteins…
Abstract
Purpose
Refined wheat flour is a key ingredient for preparing biscuits because of its gluten content. However, biscuits prepared from refined flour are characterised with low proteins, fat and mineral content. This study aims to improve the nutritive and sensory values of biscuits using roasted coffee and dry kola powders.
Design/methodology
The powders were incorporated into biscuits at different levels of 5, 10, 15 and 20 per cent. Proximate and sensory analyses were conducted on the products obtained to determine the effects of the powders on the products.
Findings
The coffee biscuits had carbohydrate, protein, fat and energy contents of 57.0-69.5 per cent, 3.3-5.5 per cent, 20.4-31.8 per cent and 389-404 kcal/g, respectively, while those of the kola biscuits were 67.0-70.5 per cent, 1.5-3.5 per cent, 20.4-23.8 per cent and 384-395 kcal/g, respectively. Sensory evaluation of both products showed that coffee significantly improved sensory attributes such as flavour (p = 0.03) and colour (p = 0.00). Thus coffee powder can be used to enhance both the nutritional and sensory qualities of biscuits.
Originality/value
This study was to promote the use of coffee and kola in locally produced baked products and meet consumer demand for healthy and natural foods.
Details
Keywords
The purpose of this paper is to show how to develop useful products from cashew by‐products, to help expand the income base of cashew farmers in the Savanna area.
Abstract
Purpose
The purpose of this paper is to show how to develop useful products from cashew by‐products, to help expand the income base of cashew farmers in the Savanna area.
Design/methodology/approach
Investigations into the utilization of some by‐products from cashew were carried out using the apples and gum from the cashew tree. The apples were processed into clarified and non‐clarified juices and jam. Cashew gum, a by‐product of the cashew tree, was used in the development of baked doughnuts as a fat replacer. The gum was used at five different levels in the preparation of the products – 0, 20, 40, 60 and 80 per cent of fat used.
Findings
The average yield of cashew juice after extraction with a screw press ranged from 53.0 to 54.6 per cent. Results on chemical and sensory analyses of the two juices showed that clarification with Polyvinylpyrrolidone reduced both the chemical and sensory quality of the juices. Protein content, total sugar concentration and K content reduced from 0.548, 58.23 and 4.23 per cent to 0.443, 18.50 and 3.32 per cent, respectively. Fat contents of the baked doughnuts were 16.72, 14.68, 8.10, 8.24 and 5.82 per cent for products with 0, 20, 40, 60 and 80 per cent cashew gum, respectively. Results of sensory analysis showed that decreasing the fat content reduced the flavour, moistness and consumer acceptance of the products. However, there was no significant difference between the products. Therefore, it is suggested that cashew gum can replace fat in baked dough nuts up to 20 per cent.
Originality/value
These findings are important to cashew farmers, processors, nutritionists and consumers as a whole.
Details
Keywords
Esther Gyedu‐Akoto and Damian Laryea
The aim of this paper is to promote the local consumption of cassava through its utilization in baked products such as cocoa powder‐based biscuits.
Abstract
Purpose
The aim of this paper is to promote the local consumption of cassava through its utilization in baked products such as cocoa powder‐based biscuits.
Design/methodology/approach
Wheat flour was substituted with cassava flour at different levels – 0, 20, 40, 60, 80 and 100 percent in the production of cocoa powder‐based biscuits. The products obtained were analyzed for protein and ash contents. Sensory analysis was also conducted on the products to determine the optimum level of inclusion of cassava flour.
Findings
The incremental addition of cassava flour to the biscuits reduced the sensory and chemical quality of the products. The use of sole cassava flour (100 percent) could not form dough to produce biscuits. However, biscuits with 20 percent cassava flour were found to be most acceptable. Regression analysis of the data showed that the quality of the products depended on their texture and protein content since these attributes had R2 values higher than 0.80.
Originality/value
This study was done to determine the potential use of cassava flour in baked products to meet the needs of the dynamic consumer market and also help in the reduction of excess cassava on the Ghanaian market.
Details