Processing pineapple pulp into dietary fibre supplement

Several tonnes of conventionally consumed dietary fibre-containing fruit components are discarded as wastes in the processing of fruits into fruit juices, resulting in the loss of food nutrients and the increased production of organic waste. A study was done to investigate the processing of pineapple pulp waste from a processing plant, into a powdered product to be used as a dietary fibre supplement. The proximate composition and the functional properties of the raw material and final product were determined. The pasting characteristics or properties of wheat flour fortified with the product up to 20 % were also determined using a viscoamylograph. The wheat flour fortified at 10 % level was used to prepare cookies and muffins after which it was subject to a performance test. Proximate analysis of the product showed crude fibre content of about 30 %; crude protein: 8.5 %; crude fat: 1.5 %; total ash: 5.2 %, and ascorbic acid: 20 mg/100 g. The fat and water absorption capacities were 2.5 g/g and 2.0 g/g of product respectively. The foaming and gelation capacities of the product were found to be 2.8 % and 12 %, respectively. Changes in the pasting characteristics of the whole-wheat flour with the 10% level of fortification were not statistically significant. Acceptance levels of the cookies and muffins made from the composite flour were high and much preference was shown for samples from the fortified flour compared to samples from whole-wheat flour without fortification. This study demonstrated a potential way of harnessing pineapple pulp, a dietary fibre source, which is lost in fruit processing. This will improve the economic value to pineapple, which is widely cultivated in Ghana. It also demonstrated a way of increasing the dietary fibre content of some popular foods to help increase the fibre intake and health of the general population.

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Production and Quality Evaluation of Functional Biscuits from Whole Wheat Flour Supplemented with Acha (Fonio) and Kidney Bean Flours

Asian Journal of Agriculture and Food Sciences ◽

10.24203/ajafs.v6i6.5573 ◽

2018 ◽

Vol 6 (6) ◽

Author(s):

Ufot E. Inyang ◽

Etini A. Daniel ◽

Florence A. Bello

Keyword(s):

Wheat Flour ◽

Dietary Fibre ◽

Nutritional Value ◽

Control Sample ◽

Kidney Bean ◽

Whole Wheat Flour ◽

Spread Ratio ◽

Whole Wheat ◽

Bean Flour ◽

Carbohydrate Contents

Composite flours are used for bakery products to improve the nutritional value and reduce the reliance on wheat importation. The present study was aimed at assessing the effect of supplementing whole wheat flour with acha and red kidney bean flours on the physical properties, proximate composition, mineral and sensory characteristics of biscuits made from the blends. Blend ratios used were 100:00:00 (T1, control sample), 75:25:00 (T2), 75:00:25 (T3) and 50:25:25 (T4) (whole wheat: acha: kidney bean flour). The result showed that all the parameters varied with the composition of flours in the blends. The biscuit weight, diameter, thickness and spread ratio ranged from 16.32 to 19.08g, 4.02 to 4.40cm, 0.69 to 0.78cm and 5.33 to 6.38 respectively. Incorporation of kidney bean flour in the blends led to the reduction in spread ratio of the biscuit. The protein, fat, ash, crude fibre and carbohydrate contents in the biscuits ranged from 11.73 to 15.20%, 16.34 to 17.95%, 1.52%, to 1.73%, 1.65 to 1.80% and 63.36 to 68.70% respectively. Samples T3 and T4 with kidney bean flour incorporation had higher protein, dietary fibre and lower carbohydrate contents than samples T1 and T2 with no kidney bean flour incorporation. The calcium, potassium, magnesium, iron and zinc contents ranged from 36.14 â€“ 45.72mg/100g, 105.40 â€“ 128.72mg/100g, 29.60 â€“ 46.81mg/100g, 3.89 â€“ 5.12mg/100g and 2.01 â€“3.51mg/100g respectively. Incorporation of kidney bean flour enhanced the calcium, magnesium and iron contents in the biscuits. Sensory mean score values showed that samples T3 and T4 were the most preferred samples in terms of overall acceptability as their values were not significantly (p>0.05) difference from each other. It is evident from the study that acceptable biscuits of improved nutritional value and high dietary fibre content could be produced from whole wheat flour supplemented with acha and kidney beans flours. This will increase the utilization of these locally grown crops and reduce wheat importation into the country. The high fibre biscuit will also possess several health benefits.

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Rheological and Sensory Attributes of Wheat, Quinoa and Buckwheat Composite Flour and their Use in Bakery Products

Journal of Food Science and Technology Nepal ◽

10.3126/jfstn.v11i0.29706 ◽

2019 ◽

Vol 11 ◽

pp. 25-31

Author(s):

Shahid Mahmood ◽

Imran Pasha ◽

Muhammad Waheed Iqbal ◽

Tahreem Riaz ◽

Muhammad Adnan ◽

...

Keyword(s):

Wheat Flour ◽

Water Extract ◽

Hot Water ◽

Composite Flour ◽

Color Analysis ◽

Whole Wheat Flour ◽

Whole Wheat ◽

Hot Water Extract ◽

Quinoa Flour ◽

Buckwheat Flour

Pseudo cereals like Quinoa and Buckwheat are not true cereals because they have only structural and compositional resemblances with true cereals. These cereals are largely grown in all over the world. They are very important due to their excellent nutritional contents especially protein and bioactive components. Cookies were prepared by making composite flour of quinoa, buckwheat and wheat. Six treatments were prepared by adding 10%, 20% and 30% of quinoa flour with whole-wheat flour and buckwheat flour with whole-wheat flour along with controlled treatment To (100% wheat flour). Composite flours were analyzed for proximate, chemical and rheological properties. Cookies were subjected to sensory evaluation, chemical analysis, physical and textural analysis. Treatments such as 90% wheat flour + 10% buckwheat flour (T1 ), and 90% wheat flour + 10% quinoa flour (T4), showed best results in comparison with all other treatments. The cookies of treatment T1 and T4 for texture and color analysis showed best results as compared to other treatments. The proximate results of cookies showed that T1 and T4 contain 13.27%, 13.32% moisture content, 13.43%, 13.38% protein content, 22.12%, 30.08% fat content, 1.7%, 1.87% crude fiber and 1.01%, 1.19% ash content respectively. Sensory results of cookies evaluated that T1 of buckwheat and T4 of quinoa showed the best results. Furthermore, a bitter taste of cookies was developed in 80% wheat flour + 20% buckwheat flour (T2), 70% wheat flour + 30% buckwheat flour (T3) of buckwheat and 80% wheat flour + 20% quinoa flour (T5), 70% wheat flour + 30% quinoa flour (T6) of quinoa treatments. The collected data was subjected to statistical analysis to check the significance of the results in hot water extract.

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