Taro Flour Research Articles

Evaluation of Enzymatic and Chemical Treatments to Produce Oxalate Depleted Starch from a Novel Variety of Colocasia esculenta Grown in Joida, India

AbstractThis research aimed to study granular and molecular structures, physicochemical, and functional properties of the starch extracted from a novel, dasheen type of taro conserved, and cultivated by several generations of Kunabi tribes of Joida, Karnataka, India. Further, an enzymatic (oxalate oxidase) and chemical (phosphoric acid) treatment processes are evaluated for reducing total oxalate content in the starch extracted from the taro flour. The total oxalate content of the taro flour is found to be 2344 mg 100 g−1, and the starch yield is about 45% in all the methods. The oxalate oxidase (OxO) and phosphoric acid treatment reduced the total oxalate content by 98.37% and 98.03%, respectively. The residual oxalate content in the resultant starch is within the threshold limit (71 mg 100 g−1). The study of characteristic properties of enzyme‐treated (ET), phosphoric acid‐treated (PT), and native starch (NT) revealed minor changes in ET and PT compared to NT.

Effect of taro [ Colocasia esculenta (L.) Schott] flour and different shortening ratio on physical and chemical properties of gluten‐free cookie

In this study, rice flour:corn starch blend (50:50) used in gluten-free cookie production was replaced with taro [Colocasia esculenta (L.) Schott] flour at 20%, 40% and 60% levels to improve new functional food formulation. Taro flour was used as raw taro flour and cooked taro flour (CTF). Cooking process was applied to reduce the anti-nutritional factors in taro. Possible adverse effects of taro flour on technological properties of cookies have been tried to be eliminated by the increasing ratio of shortening (40% and 50%). Cookie trials were conducted according to 2 × 2 × 4 factorial design. Increasing taro flour ratio in cookie significantly (p < .05) increased moisture, ash, protein and mineral contents, surface redness and cookie hardness, and decreased diameter, thickness and surface lightness. Technological quality of the gluten-free cookies improved with CTF addition and high shortening ratio (50%) in cookie formulation. Practical applications Utilization of taro flour in various cereal products is suitable for celiac patients because it does not contain gluten. As a result of this study a gluten-free cookie with high nutritional value and delicious has been suggested to the functional food industry. Another contribution on practical application is to create alternative utilization area for taro.

Characterization and Technological Potential of Underutilized Ancestral Andean Crop Flours from Ecuador

Ancestral Andean crop flours (ACF) from Ecuador such as camote (Ipomea Batatas), oca (Oxalis tuberosa), achira (Canna indica), mashua (Tropaeolum tuberosum), white arracacha (Arracacia xanthorrhiza), taro (Colocasia esculenta) and tarwi (Lupinus mutabilis sweet) were characterized in terms of physico-chemical and techno-functional properties in order to identify their potential as new alternative ingredients in food products. Flour from camote, oca, achira and arracacha showed a low protein content (&lt;5%), mashua and taro had ~9% and tarwi flour registered higher values than 52%. Carbohydrate content ranged from 56–77%, with the exception of tarwi, just reaching 6.9%. Starch content was relatively low in ACF but in taro and tarwi, starch practically constituted almost all the carbohydrates. The highest amylose content in starch, in decreasing order, was found in mashua, oca, tarwi and achira flours, the rest being ≤15%. Fiber content exceeded 10% in most crops, except for oca flour with 5.33%. Fat content was generally lower than 1%, except in tarwi with ~17%. All flours showed a gel-like behavior G′ &gt; G″, this being very similar in camote, achira and tarwi flours. The exception was taro with G′ &lt; G″. Mashua flour registered the highest value for phenol content (60.8 µg gallic acid equivalents/g of sample); the content of phenols was not exclusively responsible for the antioxidant activity, since flours with the highest activity were arracacha and tarwi, which presented the lowest phenol content among all flours. Principal component analyses (PCA) showed a high correlation between moisture, fiber, solubility and water absorption capacity, with viscoelastic behavior and total phenolic content; while starch content was correlated with melting temperature, poorly and inversely related to protein and fat. For PC1, achira, camote and taro flours were very similar, and different from oca and mashua flours. Tarwi showed its own characteristics according to PC1 and 2. Because of their properties, Andean crop flours could have a great potential for use in food technology.

Retracted: Physicochemical, functional, and nutritional evaluation of wheat and cocoyam flour blends

Retracted: Physicochemical, functional, and nutritional evaluation of wheat and cocoyam flour blends

Obtention of Taro Flour (Colocasia esculenta L.) and Its Potential in Bread Making

Obtention of Taro Flour (Colocasia esculenta L.) and Its Potential in Bread Making

Physical Quality of Chevon Meatballs with Different Levels of Taro Flour Substitution as a Filler

Taro tubers potentially serve as functional foods with significant health benefits, due to their abundant oligosaccharides. The substance is a potential raw material in flour production, as a result of their high starch composition of approximately 70%. The purpose of this research, therefore, was to determine the physical properties of chevon meatballs, comprising of various levels of taro substitutes as fillers. The materials involved were the thighs of the meat sample and taro flour. Additional ingredients consisted of ice, tapioca flour, pepper, salt, MSG, egg white, and garlic. Meatballs were produced from chevon with 10% flour as filler, in the form of tapioca and taro, with successive composition ratio of 10:0 (P0), 7.5:2.5 (P1), 5:5 (P2), 2.5:7.5 (P3), and 0:10 (P4). Data assessments were subsequently conducted, using analysis of variance (ANOVA). The results showed that the use of taro flour filler up to a level 10% did not affect the cooking loss of chevon meatballs, with exception in pH, water holding capacity (WHC) and tenderness. Consequently, the addition of filler ratio of 0:10 (tapioca:taro) tended to boost the pH, while reducing the WHC and tenderness. Moreover, the WHC increased by using tapioca and taro flours with a ratio of 5:5 (P2), compared to 7.5:2.5 (P1), 2.5:7.5 (P3), and 0:10 (P4). Furthermore, a considerable improvement in meatball tenderness was observed by the inclusion of P2 filler ratio, compared to utilizing tapioca and taro flours at 2.5:7.5 (P3) and 0:10 (P4). In summary, taro flour was feasibly applied in chevon meatball preparation up to a level of 5%, while retaining the physical properties.

Quality Characteristics and Sensory Properties of Noodles Produced from Blends of Wheat, Acha (Digitaria exilis), Bambara Groundnut, and Cocoyam Composite Flours

The objective of this study was to investigate the quality characteristics and sensory properties of noodles produced from composite flours of wheat, acha, bambara groundnut, and cocoyam. Composite flours of wheat/acha, wheat/bambara groundnut, wheat/cocoyam and wheat/acha/bambara groundnut/cocoyam were formulated by substituting acha, cocoyam and bambara groundnut flours at 10, 20 and 30% each while 100% wheat flour was used as the control. The composite flours were used to produce noodles and the noodles subjected to chroma meter analysis, proximate analysis, culinary and sensory properties evaluation. Proximate analysis revealed that the noodles contained moisture content of 10.11-11.11%, 2.72-3.99% ash, 10.34-17.52% protein, 1.25-7.51% lipid, 0.56-1.64% crude fibre and 59.38-75.03% carbohydrate. There was an increase in the moisture, ash, protein, lipid and crude fibre contents with a decrease in carbohydrate as substitution with cocoyam, acha and bambara groundnut flours increased without observed significant (p&gt;0.05) differences. With the addition of acha, bambara groundnut and cocoyam composites into wheat flour, water absorption progressively increased from 1.75 (control) to 2.07ml/g (Wheat-Acha-bambara-cocoyam 60:10:20:10). There was a significant (p&lt;0.05) increase in the cooking loss of the noodle samples as substitution levels of acha, Bambara groundnut and cocoyam flour increased. Cooking time decreased for wheat: acha flour noodles and increased for wheat: cocoyam flour noodles as substitution levels of acha and cocoyam flour increased. The composite flour of wheat: acha: cocoyam: Bambara groundnut flour also showed a decrease in cooking time as acha, cocoyam and Bambara groundnut flours were incorporated. There was no significant (p 0.05) difference in the L*, a* and b* values of wheat-bambara composite noodles. L* values of wheat-acha composite noodles increased significantly (p 0.05) with the increase in substitution with acha composite. Substitution of wheat flour with 10% to 30% acha flour and 10% to 20% Bambara groundnut flour resulted in noodles with acceptability sensory attributes.

English

The shelf life study of dry milled cocoyam flour packaged in low density polyethylene was carried out for a period of 4-month. Microbiological, nutritional, physicochemical quality characteristics and aflatoxin content were evaluated. The total viable bacterial counts ranged from 1.6×103 - 4.8×105 cfu/g while the total viable fungal count increased from 5.0 × 101 - 3.8 × 105 sfu/g. The bacteria isolated include Bacillus species, Bacillus subtilis, Proteus species, Staphylococcus epidermidis, Streptococcus pyogenes, Micrococcus luteus, Klebsiella species, Staphylococcus aureus, Pseudomonas species and Staphylococcus saprophytic. Fungal genera isolated include Penicillum species, Aspergillus flavus, Aspergillus niger, Fusarium, Mucor and Rhizopus species. Gradual decrease in pH (6.40 ± 0.001 to 4.17± 0.01) and noticeable increase in titrateable acidity (0.024 ± 0.003 to 1.17 ± 0.01%) were observed during storage. There was an increase in moisture content while carbohydrate, protein, fat, crude fibre and ash were found to decrease during storage. Aflatoxin B1 and B2 content from 0 h to the 4th month were (0.020, 0.006) and (0.097, 0.063) µg/kg respectively. The presence of aflatoxin B1 and B2 is of public health concern. There is need for improved processing, handling techniques and good hygiene practices to ensure safety of the finished product. Key words: Cocoyam, shelf life, room temperature, aflatoxin content, nutritional analysis.

PENGARUH PENGGUNAAN TEPUNG KELADI (Colocasia Esculenta) SEBAGAI PENGGANTI TAPIOKA TERHADAP KUALITAS ORGANOLEPTIK SOSIS BABI 1 (The effect of using taro flour (colocasia esculenta) as substitution of tapioca on organoleptics quality of pork sausage)

The purpose of this study was to determine the effect of using flour taro as a substitution of tapioca on organoleptic quality of cooked pork sausage. Completely Randomized Design (CRD) with four treatments and three replications was used in this experiment. The treatment consisted of TK0 = without addition of taro flour (Control), TK50 = Use of tapioca flour 50% + flour 50%, TK75 = Use of tapioca flour 25% + flour 75%, and TK100 = Flour 100% (tapioca 0 %). The results showed that using of flour taro was highly significant (P&lt;0.01) influenced the color, aroma and taste of pork sausage. As the taro flour increased, the color of sausage changed to brown, reduced the aroma and taste of sausage. To sum up, using taro flour 50%-100% as a substitution of tapioca flour causes the sausage become browner; reduce aroma and taste.

Proximate and Sensory Properties of Wheat-Cocoyam (Colocasia Esculenta) Composite Bread

In this study, samples of composite breads were produced from wheat and cocoyam flour blends using D-optimal design mixture, in the following proportions: 95:5, 90:10, 85:15. Bread sample which contained 100% wheat flour was also produced and this served as the control. The bread samples obtained were subjected to proximate and sensory analysis. The following results were obtained for the whole wheat flour bread: moisture (27.65%), protein (11.33%), crude fibre (0.59%), ash content (0.78%, fat (8.19%) and carbohydrate content (53.69%), respectively. While the composite bread samples had the moisture, protein, crude, ash, fat and carbohydrate in the following ranges:17.93-23.63%, 7.16-10.83%, 0.59-0.88%, 0.47-0.98%, 4.43-7.81% and 55.94-1.31%, respectively. The sensory tests carried out on the bread samples indicated that there was no significant difference between the whole wheat bread and the composite bread samples for flavour, crumb appearance and taste. However, for texture, overall preference and crust colour properties of the bread samples, significant differences were observed. From the study, it can be concluded that wheat flour can be substituted with cocoyam flour and bread samples made from this combination (up to 15% cocoyam flour inclusion) were acceptable. It was observed that the 100% wheat flour bread is the most acceptable, followed by the 5% cocoyam flour composite bread samples. Usage of cocoyam flours in bread baking can contribute significantly to enhancing nutrition and curbing the rising cost of bread.

ANALISIS PEMASARAN DAN DESAIN SISTEM PERBAIKAN KUALITAS TEPUNG TALAS BENENG

Problems faced in the beneng taro flour production system is quality and quantity. Therefore, it is necessary to analyze and design the improvement of the quality of beneng taro flour. The purpose of this paper is to analyze and design a quality improvement model in taro beneng. The system design stage begins with analyzed the entities of beneng taro flour production, analyzed the market, determined the quality performance indicators of the beneng taro flour, evaluated the quality, and improvements designed of the beneng taro flour. In the needs analysis, it produces input, output, stakeholder roles, control, and resources. The quality performance indicators is done by listing the quality attributes that determine quality performance. In this model, there are 8 quality dimensions and 16 of quality attributes. Quality evaluation is then carried out by comparing product performance and consumer expectations. Design improvement is done by analyzing the results of quality evaluation. Based on the analysis, there are 6 product attributes that need improvement including texture, color, suitability of product information, price suitability, ease of access and product popularity.

Sensory characteristics of sweet bread from the flour of minor tubers fermented with fungi and bacteria as flour composite flour

Wheat flour is the main raw material for making bread, but with the increase in flour imports, it is necessary to reduce flour by utilizing flour from local plants such as minor tubers which have nutritional value that is not less competitive than wheat flour. Minor tubers have high crude fibre content which can damage the texture, so fermentation is necessary to reduce the crude fibre content. The purpose of this study was to know the sensory characteristic of sweet bread to raw material minor tuber flour modified by fermentation using fungi and bacteria and to get flour that has good quality. This study used a randomized block design method (RBD) 2 factors, namely variations of tubers (V): (Taro tubers, Canna tubers, Arrowrot tubers) and types of microorganisms (M): (Trichoderma harzianum, Aspergillus niger, Bacillus subtilis). The results showed that the type of flour give different influences a very significant effect on the hedonic value of taste, aroma and colour while the texture was not significantly different. The best quality sweet bread and consumer acceptance are the V1M1 (60% Wheat flour: 40% Taro Flour fermented with bacteria Bacillus subtilis).

Proportion of taro and wheat flour, and konjac flour concentration on the characteristics of wet noodles

To be consumed as healthy food, it is necessary to improve the process to reduce the calorie value of the wet noodles. For this reason, this study used taro flour to substitute wheat flour in the processing of wet noodles. However, the use of taro flour as raw material for making noodles will reduce the quality of the product, especially from the noodles’ elasticity and texture. For this purpose, konjac flour containing glucomannan was added. Therefore, it is necessary to study the processing of wet noodles with various proportions of taro and wheat flour, and konjac flour concentration on the quality of wet noodles. This research used two factors treatment namely: the ratio of taro and wheat flour with three levels (30%:70%, 40%:60%, and 50%:50%) and konjac flour concentration with three levels (1.5%, 3.0%, and 4.5%) based on total flour weight. The parameters observed in this study were the content of water, ash, protein, fat, carbohydrate, calorie value, and the organoleptic test, which included taste, colour, aroma, and texture. Based on the analysis of variants, there was no interaction between factors. Still, the factor of the proportion of taro and konjac flour indicated the significant difference between levels for all chemical parameters except fat. Besides, the Friedman test indicates the significant difference for all organoleptic parameters. The results showed that the best treatment was the proportion of taro to wheat flour 30:70, and a concentration of 4.5% konjac flour with a total expected value of 7.86.

Chemical properties, functionality, and morphology of taro flour modified by H2O2 oxidation and irradiation of UV light

Taro tuber is one type of traditional Indonesian tubers which is potential to be processed into flour. Modification of taro flour using H2O2 oxidation catalysed with UV irradiation can improve the quality of taro flour. This study aims to determine the chemical properties, functionality, and morphology of modified taro flour affected by concentration H2O2 and oxidation-UV irradiation time. The study used a completely randomized design with two factors, hydrogen peroxide concentration (3, 4, and 5 percent) and time of oxidation-UV irradiation (5, 15, 25, and 35 minutes). Taro flour was analysed in terms of carbonyl, carboxyl, and amylose content pasting properties (peak viscosity, final viscosity, and setback, viscosity), baking expansion, crystallinity, and granular morphology. The results show that the higher the hydrogen peroxide concentration and the longer the reaction time caused the increase in the carbonyl, carboxyl, and amylose contents, peak viscosity, final viscosity, and baking expansion. Meanwhile, it caused a decrease in setback viscosity, relative crystallinity, and damaged the morphological structure of flour granules. All these characteristics are recommended for bakery product production.

KADAR OKSALAT DAN KARAKTERISTIK FISIKOKIMIA TEPUNG UMBI TALAS (Colocasia esculenta) AKIBAT FERMENTASI ALAMI

The effect of fermentation period on the pH, titratable acidity, calcium oxalate, oxalic acid, moisture, ash contents, swelling power, solubility, and color of the taro flours was investigated present research. For this aim, taro corms were cleaned, peeled, washed, sliced into chips. Taro chips were fermented at 0, 24, 48, and 72 hours, drained, dried in a cabinet dryer at 60 °C for 10 h, and ground. Results showed that pH, ash content, solubility, lightness (L *) decreased, and moisture content, titratable acidity dan swelling power increased markedly due to fermentation. Calcium oxalate and oxalic acid of the flours changed 843,83 - 412,07 mg/100 g and 370,52- 949,17 m g / 100 g flour respectively . T he fermentation at 48 h effected a significant reduction in calcium oxalate ( 51,19% ) and oxalic acid contents (64,35 % ). The present study indicated that the taro’s flours oxalate content and physicochemical characteristics properties of the taro flours were significantly affected by the fermentation period.

Taro (Colocasia esculenta) flour intake enable bone integrity in male rats

Objetivo: A proposta deste estudo foi investigar a composição óssea em ratos tratados com dieta suplementada com farinha de taro (Colocasia esculenta) até eles completarem 90 dias de idade. Métodos: No momento do desmame, os ratos foram divididos em grupo controle (C, n = 11) e experimental (T, n = 12) – composto por animais tratados com farinha de taro até os 90 dias de idade. Ingestão alimentar, massa e comprimento corporal foram avaliados semanalmente ao longo de todo o período experimental. Dimensões ósseas, bem como a densidade mineral óssea (DMO), conteúdo mineral ósseo (CMO), área óssea total e propriedades biomecânicas foram determinadas no final de 90 dias. Resultados: Grupo T apresentou elevados valores (P&lt;0.05) para massa e comprimento corporal; DMO, CMO e área óssea da coluna vertebral; DMO na quarta vértebra lombar; massa femoral, distância entre as epífises, largura do ponto médio da diáfise, DMO, força máxima e concentrações séricas de osteocalcina, quando comparado ao grupo controle. Conclusões: A ingestão da farinha de taro apresentou efeito positivo na saúde óssea.

The effect of different processes of flour making on the proximate composition of taro (Colocasia esculenta (l.) flour and taro flour cookies

This research examined the effect of flour making method using chemicals on the soaking process of taro tubers. Method 1 was done by soaking taro tubers in 500 ppm sodium metabisulfite solution. Method 2 was done by soaking in warm water at 40 ° C for 3 hours followed by immersing in 10% NaCl solution for 1 hour, Method 3 was done by immersing in a brine solution (1 teaspoon in 5 liters of water) for 20 minutes followed by soaking it again in a sodium metabisulfite solution (1 gram per 1 liter of water) for 20 minutes. In related to the proximate composition in taro flour, the result showed that the flour making that uses sodium metabisulfite (Na2S2O5) soaking method produces the best protein and crude fiber content of 3.158% and 4.080%, respectively. The taro cookie making that uses flour that is immersed in sodium metabisulfite (Na2S2O5) produces the best protein, crude fiber and energy content of 2.091%, 2.820% and 588.897% respectively. This is because the first method only uses one immersion process that is using sodium metabisulfite, while the second and third methods go through two immersion processes. It can be concluded that the flour making method using a soaking process with 500 ppm sodium metabisulfite solution can increase the benefit of using taro flour.

Decreased of calcium oxalate levels in the purple taro flour (Colocasia esculenta) from Aceh Province, Indonesia using three immersion methods

Cocoyam (Araceae family) tuber, like purple taro, traditionally are used as sources of non-rice carbohydrates in Aceh Province, Indonesia. But it contain high calcium oxalate, which contributes to kidney stones formation. Immersion in strong acid (HCl) solution can reduce calcium oxalate. However, it will cause a very strong taste and aroma in cocoyam flour. So, it is necessary to use other immersion methods. This research aimed to examine the effect of the immersion method to reduce calcium oxalate in purple taro flour. The immersion methods used in this research are weak acids (CH3COOH), salt (NaCl), and alkaline salt (NaHCO3). Calcium oxalate, moisture, and ash content were the parameters observed in this study. The result showed that all immersion methods can reduce calcium oxalate levels in purple taro flour. The lowest oxalate content (42.64 mg/100 g) was obtained by the NaHCO3 immersion method. The NaHCO3 had a significant effect to decrease calcium oxalate content in purple flour

Effect of Taro (Colocasia esculenta) Enrichment on Physicochemical and Textural Properties of Cake

Taro is a plant widely produced in tropical areas for its underground corms and it is used mainly as a vegetable. Its physicochemical, sensory properties and health benefits led to its use in value-added products. The cake is a high value-added bakery product and it needs a lower amount of gluten protein, therefore, taro flour (TF) was supplemented in wheat flour (WF) at different levels (10, 20, 30 and 40%). In connection with this, the incorporation of taro flour into wheat-based products has been reported to increase their nutritional and textural quality. The taro-supplemented cake showed higher mineral and fiber content, however, reduced caloric value. It was observed that taro supplementation reduced gluten and protein content and had higher oil and water binding capacity, therefore suitable for cake preparation. Taro cake had improved texture and sensory characteristics in comparison to wheat cake. It can be concluded that addition of taro for cake preparation improves nutrition and quality characteristics, therefore, it can be recommended to use taro for cake preparation.

Gluten-free pasta elaborated with taro flour (Colocasia esculenta): a study of the employ of egg white and transglutaminase on the technological properties

Taro (Colocasia esculenta), like any tuber, lacks the proteins that form the gluten network, making it a possible source of carbohydrates in the production of gluten-free products. This study aimed to enable the production of gluten-free pasta elaborated with taro flour. To help with the pasta structure, egg white was used as a protein source, and the transglutaminase enzyme was used as a processing aid. Pasta was produced with varying the contents of egg white powder (5 to 50% replacement in flour) and transglutaminase (0.005 to 0.05% flour base) according to a complete 2² factorial design containing 7 assays. The pasta was evaluated for pH, instrumental color parameters, cooking properties, and texture. The results were analyzed using Response Surface Methodology. Egg white contributed to increasing the chroma and hue angle, while transglutaminase only increased the chroma. Both egg white and transglutaminase showed a positive interaction effect for cooking time and increased weight of cooked pasta, and a negative interaction effect on firmness. However, these raw materials had no significant effect on the volume increase of the cooked pasta and cooking loss. The lowest contents of egg white and transglutaminase enzyme used in this study have already sufficient to structure the gluten-free pasta elaborated with taro flour, which provides adequate technological characteristics to it.