1
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Hui G, Zhu P, Wang M. Structure and functional properties of taro starch modified by dry heat treatment. Int J Biol Macromol 2024; 261:129702. [PMID: 38280699 DOI: 10.1016/j.ijbiomac.2024.129702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 01/14/2024] [Accepted: 01/22/2024] [Indexed: 01/29/2024]
Abstract
Taro starch (TS) was modified by dry heat treatment (DHT) for different periods (1, 3, 5, and 7 h at 130 °C) and temperatures (90, 110, 130, and 150 °C for 5 h) to expand its applications in food and other industries. The structure and functional properties of DHT-modified TS were characterized. It was found that TS granules became agglomerated after DHT, and the particle size, amylose content, solubility, and retrogradation enthalpy change of TS increased with increasing dry heating time and temperature, whereas the relative crystallinity, molecular weight, swelling power, gelatinization temperature, and enthalpy change decreased. The absorbance ratio of 1047 cm-1/1022 cm-1 for DHT-modified TS (except at 7 h) was higher than that of native TS. DHT increased the contact angle of TS in a time- and temperature-dependent manner. At a moderate strength, DHT increased the pasting viscosity, relative setback value, and storage modulus but decreased the relative breakdown value. Moreover, DHT (except at 150 °C) caused a decrease in the rapid digestive starch content and estimated glycemic index of TS. These results suggested that DHT-modified TS could be used in foods with high viscosity requirements, gel foods, and low-glycemic index starch-based foods.
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Affiliation(s)
- Gan Hui
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China
| | - Peilei Zhu
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China; Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Mingchun Wang
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China.
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2
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Jiang S, Guo J, Khan I, Jahan MS, Tang K, Li G, Yang X, Fu M. Comparative Metabolome and Transcriptome Analyses Reveal the Regulatory Mechanism of Purple Leafstalk Production in Taro ( Colocasia esculenta L. Schott). Genes (Basel) 2024; 15:138. [PMID: 38275619 PMCID: PMC10815928 DOI: 10.3390/genes15010138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
Taro is a plant in the Araceae family, and its leafstalk possesses significant botanical and culinary value owing to its noteworthy medicinal and nutritional attributes. Leafstalk colour is an essential attribute that significantly influences its desirability and appeal to both breeders and consumers. However, limited information is available about the underlying mechanism responsible for the taro plant's colouration. Thus, the purpose of the current study was to elucidate the information on purple leafstalks in taro through comprehensive metabolome and transcriptome analysis. In total, 187 flavonoids, including 10 anthocyanins, were identified. Among the various compounds analysed, it was observed that the concentrations of five anthocyanins (keracyanin chloride (cyanidin 3-O-rutinoside chloride), cyanidin 3-O-glucoside, tulipanin (delphinidin 3-rutinoside chloride), idaein chloride (cyanidin 3-O-galactoside), and cyanidin chloride) were found to be higher in purple taro leafstalk compared to green taro leafstalk. Furthermore, a total of 3330 differentially expressed genes (DEGs) were identified by transcriptome analysis. Subsequently, the correlation network analysis was performed to investigate the relationship between the expression levels of these differentially expressed genes and the content of anthocyanin. There were 18 DEGs encoding nine enzymes detected as the fundamental structural genes contributing to anthocyanin biosynthesis, along with seven transcription factors (3 MYB and 4 bHLH) that may be promising candidate modulators of the anthocyanin biosynthesis process in purple taro leafstalk. The findings of the current investigation not only provide a comprehensive transcriptional code, but also give information on anthocyanin metabolites as well as beneficial insights into the colour mechanism of purple taro leafstalk.
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Affiliation(s)
- Shizheng Jiang
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China; (S.J.); (J.G.); (I.K.); (K.T.); (G.L.)
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China;
| | - Juxian Guo
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China; (S.J.); (J.G.); (I.K.); (K.T.); (G.L.)
| | - Imran Khan
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China; (S.J.); (J.G.); (I.K.); (K.T.); (G.L.)
| | - Mohammad Shah Jahan
- Department of Horticulture, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh;
| | - Kang Tang
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China; (S.J.); (J.G.); (I.K.); (K.T.); (G.L.)
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China;
| | - Guihua Li
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China; (S.J.); (J.G.); (I.K.); (K.T.); (G.L.)
| | - Xian Yang
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China;
| | - Mei Fu
- Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510642, China; (S.J.); (J.G.); (I.K.); (K.T.); (G.L.)
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3
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Gupta RK, Guha P, Srivastav PP. Effect of high voltage dielectric barrier discharge (DBD) atmospheric cold plasma treatment on physicochemical and functional properties of taro (Colocasia esculenta) starch. Int J Biol Macromol 2023; 253:126772. [PMID: 37683744 DOI: 10.1016/j.ijbiomac.2023.126772] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 07/27/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
The goal of the proposed study is to investigate the effects of three different power levels (30, 32 and 34 kV) and exposure time (2, 4 and 8 min) of dielectric barrier discharge (DBD) atmospheric cold plasma treatment on the functional and physicochemical characteristics of taro starch. Investigations were done into how different treatments impact the multi-structural, functional and physicochemical attributes of taro starch. The findings showed that cold plasma treatments substantially impacted starch granule shapes (3.60-2.54 μm), such as reduced aggregations and developed fissures on granule surface due to the generation of an etching by plasma species and enhancement in the surface topography and roughness of treated starch as compared with native by SEM and AFM analysis. Besides this, no variations were detected in the functional groups of taro starch using FT-IR analysis after cold plasma treatments. However, the A-type pattern in the XRD did not affect it, while a reduction in relative crystallinity (14.20-11.50 %) was seen as a function of the active plasma species depolymerization. Furthermore, depending on the cold plasma voltage and treatment time, amylose content (20.12-15.98 %), paste clarity (24.48-31.27 %), solubility (0.41-65.53 %), freezing thaw stability (% syneresis) (32.10-42.58 %), color properties (L*, 94.79-97.52), whiteness index (79.37-84.66), molecular weight distribution (Peak 1, 12.79-5.35 × 108 g/mol; Peak 2, 4.20-1.56 × 107 g/mol) and in vitro digestibility (RDS, 64.10-64.08 %) significantly changed. So, based on these excellent properties, this study suggested that cold plasm-treated taro starch can be used in the field of food packaging material, functional food and pharmaceutical products. Therefore, a potential approach for physically altering starch is plasma treatment.
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Affiliation(s)
- Rakesh Kumar Gupta
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, West Bengal, India.
| | - Proshanta Guha
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Prem Prakash Srivastav
- Agricultural and Food Engineering Department, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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4
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Roy D, Kumar KJ. Effect of pressure treatment duration on the rheological characteristics of dry-heated alocasia starch in the presence of monosaccharide and disaccharide. Int J Biol Macromol 2023; 246:125705. [PMID: 37414314 DOI: 10.1016/j.ijbiomac.2023.125705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/29/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
The current work investigated the impact of different pressure processing times (5, 10, and 15 min) at 120 psi on the rheological behavior of a mixture of dry-heated Alocasia macrorrizhos starch with monosaccharide and disaccharide. Shear-thinning behavior was exhibited by the samples in steady shear evaluation and the highest viscosity was observed in the 15 min pressure treated samples. In the initial phase of amplitude sweep measurement, samples exhibited strain dependency but later they remain unaffected with applied deformation. The greater value of Storage modulus (G') than loss modulus (G″) (G' > G″) indicating the weak gel-like behavior. Increasing in pressure treatment duration enhanced the value of G' and G″ with applied frequency and found maximum at 15 min. In temperature sweep measurement the G', G″ as well as complex viscosity curves increased initially and then decreased after achieving peak temperature. However, the rheological parameters of the samples treated under long pressure processing time were found to be improved during temperature sweep measurements. The resulting extremely viscous, pressure-treated dry-heated Alocasia macrorrizhos starch-saccharides combination has a variety of uses in different pharmaceuticals as well as in food industries.
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Affiliation(s)
- Dipan Roy
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India
| | - K Jayaram Kumar
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India.
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Ferdaus MJ, Chukwu-Munsen E, Foguel A, da Silva RC. Taro Roots: An Underexploited Root Crop. Nutrients 2023; 15:3337. [PMID: 37571276 PMCID: PMC10421445 DOI: 10.3390/nu15153337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/20/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
Taro (Colocasia esculenta) is a root crop that remains largely underutilized and undervalued despite its abundance and affordability. In comparison to other root vegetables, such as potatoes, yams, carrots, and cassava, taro stands out as a plentiful and low-cost option. As global hunger increases, particularly in Africa, it becomes essential to address food insecurity by maximizing the potential of existing food resources, including taro, and developing improved food products derived from it. Taro possesses a wealth of carbohydrates, dietary fiber, vitamins, and minerals, thereby making it a valuable nutritional source. Additionally, while not a significant protein source, taro exhibits higher protein content than many other root crops. Consequently, utilizing taro to create food products, such as plant-based milk alternatives, frozen desserts, and yogurt substitutes, could play a crucial role in raising awareness and increasing taro production. Unfortunately, taro has been stigmatized in various cultures, which has led to its neglect as a food crop. Therefore, this review aims to highlight the substantial potential of taro as an economical source of dietary energy by exploring the rich fiber, potassium, vitamin C, protein, and other micronutrient content of taro, and providing a foundation for the formulation of novel food products. Furthermore, this paper assesses the nutritional benefits of taro, its current utilization, and its antinutritional properties. It emphasizes the need for further research to explore the various applications of taro and improve on-farm processing conditions for industrial purposes.
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Affiliation(s)
- Md. Jannatul Ferdaus
- Family and Consumer Sciences, College of Agriculture and Environmental Sciences, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Ezzine Chukwu-Munsen
- Family and Consumer Sciences, College of Agriculture and Environmental Sciences, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Aline Foguel
- Department of Biochemical-Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, SP, Brazil
| | - Roberta Claro da Silva
- Family and Consumer Sciences, College of Agriculture and Environmental Sciences, North Carolina A&T State University, Greensboro, NC 27411, USA
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Zubair MW, Imran A, Islam F, Afzaal M, Saeed F, Zahra SM, Akhtar MN, Noman M, Ateeq H, Aslam MA, Mehta S, Shah MA, Awuchi CG. Functional profile and encapsulating properties of Colocasia esculenta (Taro). Food Sci Nutr 2023; 11:2440-2449. [PMID: 37324900 PMCID: PMC10261768 DOI: 10.1002/fsn3.3357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/19/2023] [Accepted: 03/21/2023] [Indexed: 04/07/2023] Open
Abstract
Especially in tropical and subtropical countries, tuber and root crops have developed into important food crops. Due to its use in food preparation, aesthetics, and medicine, taro (Colocasia esculenta) is ranked as the fifth most important root crop. In comparison, it stores a considerable quantity of starch - even more than potatoes, sweet potatoes, cassava, and other similar crops. Colocasia leaves are lower in calories and high in dietary fiber minerals and proteins. The corms of Colocasia antiquorum contain anthocyanins such as pelargonidin-3-glucoside, cyanidin-3-glucoside, and cyanidin-3-chemnoside, which are reported to possess antifungal and antioxidative characteristics. The underground corms of taro (Colocasia esculenta), which contain 70%-80% starch, are the primary reason for its cultivation. Taro is a highly digestible root vegetable with a high content of mucilaginous gums and trivial starchy granules. It is used to make a variety of dishes. This review article highlights the functional properties, phytochemical profile, encapsulating properties, and various industrial applications. Its health advantages and dietary uses were also addressed.
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Affiliation(s)
| | - Ali Imran
- Department of Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Fakhar Islam
- Department of Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Muhammad Afzaal
- Department of Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Farhan Saeed
- Department of Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Syeda Mahvish Zahra
- Department of Environmental Design, Health and Nutritional SciencesAllama Iqbal Open UniversityIslamabadPakistan
- Institute of Food Science and Nutrition, University of SargodhaSargodhaPakistan
| | - Muhammad Nadeem Akhtar
- University Institute of Diet and Nutritional SciencesThe University of LahoreLahorePakistan
| | - Muhammad Noman
- Department of Food SciencesGovernment College UniversityFaisalabadPakistan
| | - Huda Ateeq
- Department of Food SciencesGovernment College UniversityFaisalabadPakistan
| | | | - Shilpa Mehta
- Department of Electrical and Electronic EngineeringAuckland University of TechnologyAucklandNew Zealand
| | - Mohd Asif Shah
- Adjunct Faculty, University Center for Research and Development, Chandigarh UniversityGharuanMohaliPunjabIndia
| | - Chinaza Godswill Awuchi
- School of Natural and Applied SciencesKampala International UniversityBox 20000 KansangaKampalaUganda
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7
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Fan H, Zhu P, Hui G, Shen Y, Yong Z, Xie Q, Wang M. Mechanism of synergistic stabilization of emulsions by amorphous taro starch and protein and emulsion stability. Food Chem 2023; 424:136342. [PMID: 37209438 DOI: 10.1016/j.foodchem.2023.136342] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 04/20/2023] [Accepted: 05/08/2023] [Indexed: 05/22/2023]
Abstract
Amorphous taro starch (TS)/whey protein isolate (WPI) mixtures were prepared using pasting treatment. The TS/WPI mixtures and their stabilized emulsions were characterized to determine the emulsion stability and the mechanism of synergistic stabilization of emulsions. As WPI content increased from 0% to 13%, the paste final viscosity and retrogradation ratio of the TS/WPI mixture gradually decreased from 3683 cP to 2532 cP and from 80.65% to 30.51%, respectively. As the WPI content increased from 0% to 10%, the emulsion droplet size decreased gradually from 96.81 μm to 10.32 μm, and the storage modulus G' and stabilities of freeze-thaw, centrifugal, and storage increased gradually. Confocal laser scanning microscopy revealed that WPI and TS were mainly distributed at the oil-water interface and droplet interstice, respectively. Thermal treatment, pH, and ionic strength had little influence on the appearance but had different influences on the droplet size and G', and the rates of droplet size and G' increase under storage varied with different environmental factors.
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Affiliation(s)
- Huan Fan
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China
| | - Peilei Zhu
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China; Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230031, China
| | - Gan Hui
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China
| | - Yue Shen
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China
| | - Zongjie Yong
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China
| | - Qingling Xie
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China
| | - Mingchun Wang
- Department of Food Science and Engineering, Anhui Engineering Laboratory for Agro-products Processing, Anhui Agricultural University, Hefei 230036, China.
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8
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Roy D, Kumar KJ. Influence of disaccharide and monosaccharide on the rheological behavior of dry-heated alocasia starch under high pressure assisted treatment. Int J Biol Macromol 2023; 241:124663. [PMID: 37119887 DOI: 10.1016/j.ijbiomac.2023.124663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/20/2023] [Accepted: 04/24/2023] [Indexed: 05/01/2023]
Abstract
High viscous products made with starch are of great scientific interest in the food, pharmaceutical, and cosmetic industries because they can be used to make creams and gels, as well as functional foods and nutritional products. But, obtaining a good quality highly viscous materials represent a technological challenge. In this present study, the effect of high-pressure treatment at 120 psi for different time interval on the mixture of dry-heated alocasia starch in presence of monosaccharide and disaccharide was studied. A flow measurement test on the samples revealed their shear-thinning behavior. With 15 min of high-pressure processing time, the dry-heated starch and saccharide mixtures displayed the highest viscosity. The dynamic viscoelasticity measurement showed that the storage and loss modulus was enhanced significantly after high-pressure treatment, and all pressure-treated samples showed a gel-like structure (G/>G//). In temperature sweep measurement, the rheological profile of storage modulus, loss modulus, and complex viscosity exhibited a two-stage pattern, i.e., first increased, then decreased, and their values were enhanced significantly after pressure treatment. The resultant highly viscous dry-heated starch and saccharide system have various functionalities in diverse food and pharmaceutical products.
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Affiliation(s)
- Dipan Roy
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India
| | - K Jayaram Kumar
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology, Mesra, Ranchi 835215, Jharkhand, India.
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Shende AP, Chidambaram R. Cocoyam powder extracted from Colocasia antiquorum as a novel plant-based bioflocculant for industrial wastewater treatment: Flocculation performance and mechanism. Heliyon 2023; 9:e15228. [PMID: 37095926 PMCID: PMC10121460 DOI: 10.1016/j.heliyon.2023.e15228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/22/2023] [Accepted: 03/30/2023] [Indexed: 04/26/2023] Open
Abstract
In the current investigation, the comparative study of cocoyam bioflocculant (CYBF) and chemical flocculant for the removal of heavy metals, COD, BOD, TDS, TSS, sulphate and nitrate from tannery effluent, and dyes from synthetic dye wastewater were examined. Different analytical techniques, including Fourier transforms infrared (FTIR), X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDX), were used to characterise the extracted bioflocculant. FTIR spectral measurement of the bioflocculant demonstrated the presence of hydroxyl, carboxyl, and amino groups. By using bioflocculant, the highest removal of TSS (85.5%), TDS (76.2%), BOD (74%), COD (50.5%), sulphate (54.4%), nitrate (52%), Lead (65%), Chromium (60%), Nickel (57.9%), from tannery effluent was achieved at pH 6 and bioflocculant dosage of 8 mg/L. While, 80% congo red, 79% methyl orange, 73% safranin, and 72% methylene blue were removed from synthetic dye wastewater by cocoyam bioflocculant. Two flocculation mechanisms were found for dye removal, electrostatic force of attraction, and hydrogen bonding. In the case of metal adsorption, only electrostatic interactions were observed between metal ions and functional groups of bioflocculant. The cocoyam bioflocculant exhibited excellent flocculation efficacy and thus can be used in wastewater treatment to remove heavy metals and other pollutants.
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Characterization of Biodegradable Films Made from Taro Peel ( Colocasia esculenta) Starch. Polymers (Basel) 2023; 15:polym15020338. [PMID: 36679218 PMCID: PMC9862323 DOI: 10.3390/polym15020338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/02/2023] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Studies of renewable polymers have highlighted starch’s role to replace petroleum-based components to produce biodegradable films with plastic-like qualities. In this study, the novelty of taro peel starch (TPS) to produce such films using the casting technique is reported for the first time. A response surface method (RSM) approach was employed to optimize different concentrations of TPS (2.5−3.5%, w/w) and glycerol (25−35%, w/w) and investigate their effects on the physico-mechanical and water barrier properties of TPS films. TPS films showed a positive linear effect (p < 0.05) for thickness (0.058−0.088 mm), opacity (1.95−2.67), water vapor permeability (0.06−0.09 g∙m/m2∙kPa∙h), and cubic effect (p < 0.05) for moisture content (0.58−1.57%), which were linked to high starch concentrations when plasticized with glycerol. X-ray diffraction analysis of TPS films depicted “amorphous”-type crystalline structure peaks at 19.88°, while the thermogravimetric analysis of the film samples exhibited 75−80% of the weight loss of TPS film in the second phase between temperatures of 300 °C to 400 °C. All films exhibited homogenous, transparent surfaces with flexibility, and completely degraded in 5 days in simulated river water and composting soil environments, which confirmed TPS as a promising film polymer in food packaging.
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Kelbessa BG, Ghadamgahi F, Kumar PL, Ortiz R, Whisson SC, Bhattacharjee R, Vetukuri RR. Antagonistic and plant growth promotion of rhizobacteria against Phytophthora colocasiae in taro. FRONTIERS IN PLANT SCIENCE 2022; 13:1035549. [PMID: 36531382 PMCID: PMC9755733 DOI: 10.3389/fpls.2022.1035549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Taro leaf blight caused by Phytophthora colocasiae adversely affects the growth and yield of taro. The management of this disease depends heavily on synthetic fungicides. These compounds, however, pose potential hazards to human health and the environment. The present study aimed to investigate an alternative approach for plant growth promotion and disease control by evaluating seven different bacterial strains (viz., Serratia plymuthica, S412; S. plymuthica, S414; S. plymuthica, AS13; S. proteamaculans, S4; S. rubidaea, EV23; S. rubidaea, AV10; Pseudomonas fluorescens, SLU-99) and their different combinations as consortia against P. colocasiae. Antagonistic tests were performed in in vitro plate assays and the effective strains were selected for detached leaf assays and greenhouse trials. Plant growth-promoting and disease prevention traits of selected bacterial strains were also investigated in vitro. Our results indicated that some of these strains used singly (AV10, AS13, S4, and S414) and in combinations (S4+S414, AS13+AV10) reduced the growth of P. colocasiae (30-50%) in vitro and showed disease reduction ability when used singly or in combinations as consortia in greenhouse trials (88.75-99.37%). The disease-suppressing ability of these strains may be related to the production of enzymes such as chitinase, protease, cellulase, and amylase. Furthermore, all strains tested possessed plant growth-promoting traits such as indole-3-acetic acid production, siderophore formation, and phosphate solubilization. Overall, the present study revealed that bacterial strains significantly suppressed P. colocasiae disease development using in vitro, detached leaf, and greenhouse assays. Therefore, these bacterial strains can be used as an alternative strategy to minimize the use of synthetic fungicides and fertilizers to control taro blight and improve sustainable taro production.
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Affiliation(s)
- Bekele Gelena Kelbessa
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - Farideh Ghadamgahi
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - P. Lava Kumar
- International Institute of Tropical Agriculture, Ibadan, Nigeria
| | - Rodomiro Ortiz
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden
| | - Stephen C. Whisson
- Cell and Molecular Sciences, James Hutton Institute, Dundee, United Kingdom
| | | | - Ramesh Raju Vetukuri
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Lomma, Sweden
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Zhang W, Huang G. Preparation, structural characteristics, and application of taro polysaccharides in food. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:6193-6201. [PMID: 35679352 DOI: 10.1002/jsfa.12058] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/18/2022] [Accepted: 06/09/2022] [Indexed: 06/15/2023]
Abstract
Taro, a staple food for residents in Africa and parts of Asia, is an important source of carbohydrate. China has abundant taro resources. Taro contains polysaccharide, vitamins, minerals and other substances. Taro polysaccharides, as a significant active ingredient in taro, are mainly composed of monosaccharide units such as glucose, galactose, arabinose, mannose, and so on. Taro polysaccharides have antioxidant, lipid-lowering, and immunomodulatory effects. In today's world, people are interested in food containing natural ingredients, which stimulates the potential of taro polysaccharides in the food, pharmaceutical, medical, and other fields. Herein, the extraction and purification, structural characterization, functional activity, and application of taro polysaccharides are reviewed to strengthen the cognition of taro polysaccharides. It provides references for further research and development of taro polysaccharides. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Wenting Zhang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Key Laboratory of Green Synthesis and Application, Chongqing Normal University, Chongqing, China
| | - Gangliang Huang
- Key Laboratory of Carbohydrate Science and Engineering, Chongqing Key Laboratory of Green Synthesis and Application, Chongqing Normal University, Chongqing, China
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13
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Mitharwal S, Kumar A, Chauhan K, Taneja NK. Nutritional, phytochemical composition and potential health benefits of taro (Colocasia esculenta L.) leaves: A review. Food Chem 2022; 383:132406. [PMID: 35176712 DOI: 10.1016/j.foodchem.2022.132406] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 02/04/2022] [Accepted: 02/07/2022] [Indexed: 11/19/2022]
Abstract
Colocasia esculenta(L) or taro is a tropical crop largely produced for its tubers (corms) while leaves and stems remain underutilized and untapped by-products with promising potential applications.Colocasialeaves are low in calories, rich in proteins, dietary fiber, and micronutrients. However, its utilization as food remains limited owing to the lack of awareness vis-à-vis its nutritional profile and the presence of antinutrients such as tannins, phytates and oxalates. The antinutritional factors can be overcome by cooking and varied processing techniques thereby unveiling the nutritional benefits. The high content of bioactive compounds and antioxidative potential of colocasia leaves renders several health benefits such as anticancer, antidiabetic, anti-inflammatory activity. The paper reviews the available literature on the nutritional, antinutritional, phytochemical profile of taro leaves and the advanced analytical techniques for their identification and quantification. Further, its health benefits and food applications have been discussed.
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Affiliation(s)
- Swati Mitharwal
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship & Management (NIFTEM), Kundli 131028, India
| | - Ankur Kumar
- Department of Basic and Applied Sciences, National Institute of Food Technology Entrepreneurship & Management (NIFTEM), Kundli 131028, India
| | - Komal Chauhan
- Department of Food Science and Technology, National Institute of Food Technology Entrepreneurship & Management (NIFTEM), Kundli 131028, India.
| | - Neetu Kumra Taneja
- Department of Basic and Applied Sciences, National Institute of Food Technology Entrepreneurship & Management (NIFTEM), Kundli 131028, India
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14
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Shah YA, Saeed F, Afzaal M, Waris N, Ahmad S, Shoukat N, Ateeq H. Industrial applications of taro (
colocasia esculenta
) as a novel food ingredient: a review. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasir Abbas Shah
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Farhan Saeed
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Muhammad Afzaal
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Numra Waris
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Shabana Ahmad
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Noman Shoukat
- Department of Food Sciences Government College University Faisalabad Pakistan
| | - Huda Ateeq
- Department of Food Sciences Government College University Faisalabad Pakistan
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15
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Yu X, Zhang Y, Ran L, Lu W, Zhang E, Xiong F. Accumulation and physicochemical properties of starch in relation to eating quality in different parts of taro (Colocasia esculenta) corm. Int J Biol Macromol 2022; 194:924-932. [PMID: 34852257 DOI: 10.1016/j.ijbiomac.2021.11.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/20/2021] [Accepted: 11/22/2021] [Indexed: 11/30/2022]
Abstract
The accumulation and physicochemical properties of starch affect the eating quality of taro corm. This study aims to investigate the accumulation, morphology, and physicochemical properties of starch from inner and outer tissues in the top, middle, and basal parts of taro corm. Structural and morphological observations showed that the inner tissues of the taro corm accumulated more starch, and the middle tissue had moderate amylose content and the largest granule diameter. Starch from different tissues exhibited A-type orthorhombic structure and similar nuclear magnetic resonance spectrum. The relative crystallinity of starch in the middle tissue was higher than that in the top and basal tissues. Compared with middle and basal tissues, starch from top tissue showed higher peak viscosity, pasting time, swelling power and solubility. Compared with the top and basal tissues, the middle tissue of taro corm exhibited higher index of eating quality including smell, texture, and total evaluation score. The results indicated that starches in various spatial parts of taro corm exhibit differences in accumulation, morphology, structure and physicochemical properties that lead to diverse eating qualities.
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Affiliation(s)
- Xurun Yu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Yumeng Zhang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Liping Ran
- Guangling College of Yangzhou University, Yangzhou, Jiangsu 225000, China
| | - Wenyi Lu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Erjin Zhang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
| | - Fei Xiong
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou 225009, China; Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China.
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16
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Lloyd GR, Uesugi A, Gleadow RM. Effects of Salinity on the Growth and Nutrition of Taro (Colocasia esculenta): Implications for Food Security. PLANTS 2021; 10:plants10112319. [PMID: 34834682 PMCID: PMC8621212 DOI: 10.3390/plants10112319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/09/2021] [Accepted: 10/20/2021] [Indexed: 11/22/2022]
Abstract
Taro (Colocasia esculenta (L.) Schott) is a staple food crop in the Asia-Pacific region in areas where rising sea levels are threatening agricultural production. However, little is known about its response to salinity. In this study, we investigated the effects of salinity on the growth, morphology, physiology, and chemical traits of taro to predict the impacts of rising sea levels on taro production and nutritional value in the Pacific. We grew taro (approximately 4 months old) with a range of NaCl treatments (0–200 mM) for 12 weeks. Full nutrient, micronutrient, and secondary metabolite analyses were conducted, including measures of calcium oxalate (CaOx), an irritant that reduces palatability. Significant reductions in growth and biomass were observed at and above 100 mM NaCl. Concentrations of macro- and micronutrients, including sodium, were higher on a per mass basis in corms of plants experiencing salt stress. Foliar sodium concentrations remained stable, indicating that taro may utilize a salt exclusion mechanism. There was a large amount of individual variation in the concentrations of oxalate and phenolics, but overall, the concentrations were similar in the plants grown with different levels of salt. The total contents of CaOx and phenolics decreased in plants experiencing salt stress. Taro’s ability to survive and produce corms when watered with a 200 mM NaCl solution places it among the salt-tolerant non-halophytes. The nutritional quality of the crop is only marginally affected by salt stress. Taro is, therefore, likely to remain a useful staple in the Pacific region in the future.
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Affiliation(s)
- Georgia R. Lloyd
- School of Biological Sciences, Monash University, Clayton, Melbourne, VIC 3800, Australia; (G.R.L.); (A.U.)
| | - Akane Uesugi
- School of Biological Sciences, Monash University, Clayton, Melbourne, VIC 3800, Australia; (G.R.L.); (A.U.)
- School of Biosciences and Food Technology, RMIT, Bundoora Campus, 264 Plenty Road, Mill Park, VIC 3082, Australia
| | - Roslyn M. Gleadow
- School of Biological Sciences, Monash University, Clayton, Melbourne, VIC 3800, Australia; (G.R.L.); (A.U.)
- Correspondence:
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17
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Gamal-Eldeen A, Amer H, Fahmy C, Dahlawi H, Elesawy B, Faizo N, Raafat B. Tumor Anti-Initiation and Anti-Progression Properties of Sulphated-Extract of Colocasia esculenta. POL J FOOD NUTR SCI 2021. [DOI: 10.31883/pjfns/142835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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18
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Dilek NM, Bilgiçli N. Effect of taro [
Colocasia esculenta
(L.) Schott] flour and different shortening ratio on physical and chemical properties of gluten‐free cookie. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nazik Meziyet Dilek
- Department of Nutrition and Dietetics Kadir Yallagöz School of HealthSelçuk University Akşehir, Konya Turkey
| | - Nermin Bilgiçli
- Department of Food Engineering Faculty of Engineering Necmettin Erbakan University Konya Turkey
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19
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Kumar A, Anju T, Kumar S, Chhapekar SS, Sreedharan S, Singh S, Choi SR, Ramchiary N, Lim YP. Integrating Omics and Gene Editing Tools for Rapid Improvement of Traditional Food Plants for Diversified and Sustainable Food Security. Int J Mol Sci 2021; 22:8093. [PMID: 34360856 PMCID: PMC8348985 DOI: 10.3390/ijms22158093] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 12/20/2022] Open
Abstract
Indigenous communities across the globe, especially in rural areas, consume locally available plants known as Traditional Food Plants (TFPs) for their nutritional and health-related needs. Recent research shows that many TFPs are highly nutritious as they contain health beneficial metabolites, vitamins, mineral elements and other nutrients. Excessive reliance on the mainstream staple crops has its own disadvantages. Traditional food plants are nowadays considered important crops of the future and can act as supplementary foods for the burgeoning global population. They can also act as emergency foods in situations such as COVID-19 and in times of other pandemics. The current situation necessitates locally available alternative nutritious TFPs for sustainable food production. To increase the cultivation or improve the traits in TFPs, it is essential to understand the molecular basis of the genes that regulate some important traits such as nutritional components and resilience to biotic and abiotic stresses. The integrated use of modern omics and gene editing technologies provide great opportunities to better understand the genetic and molecular basis of superior nutrient content, climate-resilient traits and adaptation to local agroclimatic zones. Recently, realizing the importance and benefits of TFPs, scientists have shown interest in the prospection and sequencing of TFPs for their improvements, cultivation and mainstreaming. Integrated omics such as genomics, transcriptomics, proteomics, metabolomics and ionomics are successfully used in plants and have provided a comprehensive understanding of gene-protein-metabolite networks. Combined use of omics and editing tools has led to successful editing of beneficial traits in several TFPs. This suggests that there is ample scope for improvement of TFPs for sustainable food production. In this article, we highlight the importance, scope and progress towards improvement of TFPs for valuable traits by integrated use of omics and gene editing techniques.
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Affiliation(s)
- Ajay Kumar
- Department of Plant Science, Central University of Kerala, Kasaragod 671316, Kerala, India; (T.A.); (S.S.)
| | - Thattantavide Anju
- Department of Plant Science, Central University of Kerala, Kasaragod 671316, Kerala, India; (T.A.); (S.S.)
| | - Sushil Kumar
- Department of Botany, Govt. Degree College, Kishtwar 182204, Jammu and Kashmir, India;
| | - Sushil Satish Chhapekar
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
| | - Sajana Sreedharan
- Department of Plant Science, Central University of Kerala, Kasaragod 671316, Kerala, India; (T.A.); (S.S.)
| | - Sonam Singh
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
| | - Su Ryun Choi
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
| | - Nirala Ramchiary
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, Delhi, India
| | - Yong Pyo Lim
- Molecular Genetics & Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon 34134, Korea; (S.S.C.); (S.S.); (S.R.C.)
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20
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Utilization of ultrasound and pulse electric field for the extraction of water-soluble non-starch polysaccharide from taro (Colocasia esculenta) peel. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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The effect of taro-wheat flour and taro-gluten free flour on cake batters and quality. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-020-00656-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Calle J, Gasparre N, Benavent-Gil Y, Rosell CM. Aroids as underexplored tubers with potential health benefits. ADVANCES IN FOOD AND NUTRITION RESEARCH 2021; 97:319-359. [PMID: 34311903 DOI: 10.1016/bs.afnr.2021.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
Colocasia esculenta (L.) Schott and Xanthosoma sagittifolium (L.) Schott are the most popular tubers among the Araceas family. Their chemical composition related to their nutritional benefits could make these rhizomes a valid option for the nutritional and technological improvement of food products. This chapter provide a clarification about the correct nomenclature of both tubers giving an insight around the principle components and their health effects. The scientific literature review has primarily highlighted several in vitro and animal studies where the consumption (leaves and whole tuber) of Colocasia esculenta (L.) Schott and Xanthosoma sagittifolium (L.) Schott was related with certain antihyperglycemic, antihypertensive, hypoglycemic and prebiotic effects. Owing to their functional properties, different component from these rhizomes, specially starch, mucilage and powders are being used by the food industry. Their ability to behave as thickener and gelling agent has allowed their incorporation in baked food, food paste and beverages. This chapter suggests the development of more research around these rhizomes since they could potentially play, with other crops, an important role in the future sustainable strategies to feed the planet.
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Affiliation(s)
- Jehannara Calle
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Paterna, Valencia, Spain; Food research Institute for the Food Industry (IIIA), La Habana, Cuba
| | - Nicola Gasparre
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Paterna, Valencia, Spain
| | - Yaiza Benavent-Gil
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Paterna, Valencia, Spain
| | - Cristina M Rosell
- Institute of Agrochemistry and Food Technology (IATA-CSIC), Paterna, Valencia, Spain.
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23
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Anticancer and Immunomodulatory Benefits of Taro ( Colocasia esculenta) Corms, an Underexploited Tuber Crop. Int J Mol Sci 2020; 22:ijms22010265. [PMID: 33383887 PMCID: PMC7795958 DOI: 10.3390/ijms22010265] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/21/2020] [Accepted: 12/21/2020] [Indexed: 12/20/2022] Open
Abstract
Taro corms contain valuable bioactive molecules effective against cancer and cancer-related risk factors, such as carcinogens and biological agents, several pathophysiological conditions, including oxidative stress and inflammation, while controlling metabolic dysfunctions and boosting the immunological response. Such broad effects are achieved by the taro health-influencing compounds displaying antitumoral, antimutagenic, immunomodulatory, anti-inflammatory, antioxidant, anti-hyperglycemic, and anti-hyperlipidemic activities. Taro bioactivities are attributed to the combination of tarin, taro-4-I polysaccharide, taro polysaccharides 1 and 2 (TPS-1 and TPS-2), A-1/B-2 α-amylase inhibitors, monogalactosyldiacylglycerols (MGDGs), digalactosyldiacylglycerols (DGDGs), polyphenols, and nonphenolic antioxidants. Most of these compounds have been purified and successfully challenged in vitro and in vivo, proving their involvement in the aforementioned activities. Although these health-promoting effects have been recognized since ancient times, as well as other valuable features of taro for food profit, such as hypo-allergenicity, gluten-free, and carbohydrates with medium-glycemic index, taro crop remains underexploited. The popularization of taro intake should be considered a dietary intervention strategy to be applied to improve the overall health status of the organism and as supportive therapy to manage tumorigenesis.
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24
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Anwar M, Birch EJ, Ding Y, Bekhit AED. Water-soluble non-starch polysaccharides of root and tuber crops: extraction, characteristics, properties, bioactivities, and applications. Crit Rev Food Sci Nutr 2020; 62:2309-2341. [DOI: 10.1080/10408398.2020.1852388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mylene Anwar
- Department of Food Science, University of Otago, Dunedin, New Zealand
- Department of Food Science, Central Mindanao University, Musuan, Maramag, Bukidnon, Philippines
| | - Edward John Birch
- Department of Food Science, University of Otago, Dunedin, New Zealand
| | - Yu Ding
- Department of Food Science and Technology, Institute of Food Safety and Nutrition, College of Science and Engineering, College of Life Science and Technology, Jinan University, Guangzhou, PR China
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou, PR China
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25
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Calle J, Benavent-Gil Y, Rosell CM. Use of flour from cormels of Xanthosoma sagittifolium (L.) Schott and Colocasia esculenta (L.) Schott to develop pastes foods: Physico-chemical, functional and nutritional characterization. Food Chem 2020; 344:128666. [PMID: 33248837 DOI: 10.1016/j.foodchem.2020.128666] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 11/02/2020] [Accepted: 11/14/2020] [Indexed: 12/20/2022]
Abstract
The corms of cocoyams, specifically Colocasia esculenta (L.) Schott and Xanthosoma sagittifolium (L.) Schott are usually consumed as pastes. Nevertheless, the secondary corms, also named cormels, are not fully exploited. In this study, the chemical composition and functional properties of cormels from different botanical sources were evaluated, and the digestibility of the resulting pastes investigated. Colocasia spp. flour contained significantly higher protein (10.32% vs 9.65%), ash (5.65% vs 5.05%) and oxalates (0.32% vs 0.22%) content, and exhibited lower Amylab gel strength (773 g vs 1040 g) than Xanthosoma spp. flour. In the resulting pastes, micrographs revealed that starch gelatinization depended on cocoyam variety. Indeed, the very tight and closed microstructure of pastes containing Colocasia spp. flour led them to better stability during storage with lower syneresis. Lower protein digestibility was obtained in Colocasia spp. gels (67.56% vs 70.91%), but they showed faster (higher k) in vitro starch hydrolysis (0.0140 vs 0.0050) with lower estimated glycemic index (61.29 vs 65.84) than Xanthosoma spp. gels. The present findings offer ways to develop cocoyam based foods by using cormels, enhancing the applicability of cocoyams.
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Affiliation(s)
- Jehannara Calle
- Institute of Agrochemistry and Food Technology (IATA-CSIC), C/ Agustin Escardino, 7, Paterna 46980, Valencia, Spain; Food Research Institute for the Food Industry (IIIA), Carretera al Guatao km 3(1/2), La Lisa 17100, La Habana, Cuba.
| | - Yaiza Benavent-Gil
- Institute of Agrochemistry and Food Technology (IATA-CSIC), C/ Agustin Escardino, 7, Paterna 46980, Valencia, Spain
| | - Cristina M Rosell
- Institute of Agrochemistry and Food Technology (IATA-CSIC), C/ Agustin Escardino, 7, Paterna 46980, Valencia, Spain.
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26
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Singla D, Singh A, Dhull SB, Kumar P, Malik T, Kumar P. Taro starch: Isolation, morphology, modification and novel applications concern - A review. Int J Biol Macromol 2020; 163:1283-1290. [DOI: 10.1016/j.ijbiomac.2020.07.093] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 07/09/2020] [Accepted: 07/09/2020] [Indexed: 12/15/2022]
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27
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Identification of functional properties of non-timber forest produce and locally available food resources in promoting food security among Irula tribes of South India. J Public Health (Oxf) 2020. [DOI: 10.1007/s10389-019-01075-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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28
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Wardhani RAK, Asri LATW, Rachmawati H, Khairurrijal K, Purwasasmita BS. Physical-Chemical Crosslinked Electrospun Colocasia esculenta Tuber Protein-Chitosan-Poly(Ethylene Oxide) Nanofibers with Antibacterial Activity and Cytocompatibility. Int J Nanomedicine 2020; 15:6433-6449. [PMID: 32922010 PMCID: PMC7457767 DOI: 10.2147/ijn.s261483] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/16/2020] [Indexed: 01/18/2023] Open
Abstract
Background Electrospun nanofibers based on Colocasia esculenta tuber (CET) protein are considered as a promising material for wound dressing applications. However, the use of these nanofibers in aqueous conditions has poor stability. The present study was performed to obtain insights into the crosslinked electrospun CET’s protein–chitosan (CS)–poly(ethylene oxide) (PEO) nanofibers and to evaluate their potential for wound dressing applications. Methods The electrospun nanofibers were crosslinked with glutaraldehyde (GA) vapor and heat treatment (HT) to enhance their physicochemical stability. The crosslinked nanofibers were characterized by protein profiles, morphology structures, thermal behavior, mechanical properties, and degradation behavior. Furthermore, the antibacterial properties and cytocompatibility were analyzed by antibacterial assessment and cell proliferation. Results The protein profiles of the electrospun CET’s protein–CS–PEO nanofibers before and after HT crosslinking contained one major bioactive protein with a molecular weight of 14.4 kDa. Scanning electron microscopy images of the crosslinked nanofibers indicated preservation of the structure after immersion in phosphate buffered saline. The crosslinked nanofibers resulted in higher ultimate tensile strength and lower ultimate strain compared to the non-crosslinked nanofibers. GA vapor crosslinking showed higher water stability compared to HT crosslinking. The in vitro antibacterial activity of the crosslinked nanofibers showed a stronger bacteriostatic effect on Staphylococcus aureus than on Escherichia coli. Human skin fibroblast cell proliferation on crosslinked GA vapor and HT nanofibers with 1% (w/v) CS and 2% (w/v) CET’s protein demonstrated the highest among all the other crosslinked nanofibers after seven days of cell culture. Cell proliferation and cell morphology results revealed that introducing higher CET’s protein concentration on crosslinked nanofibers could increase cell proliferation of the crosslinked nanofibers. Conclusion These results are promising for the potential use of the crosslinked electrospun CET’s protein–CS–PEO nanofibers as bioactive wound dressing materials.
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Affiliation(s)
- Riesca Ayu Kusuma Wardhani
- Advanced Materials Processing Group, Engineering Physics Study Program, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Lia A T W Asri
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Heni Rachmawati
- School of Pharmacy, Institut Teknologi Bandung, Bandung 40132, Indonesia.,Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Khairurrijal Khairurrijal
- Physics of Electronic Materials Division, Physics Study Program, Institut Teknologi Bandung, Bandung 40132, Indonesia.,Bioscience and Biotechnology Research Center, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Bambang Sunendar Purwasasmita
- Advanced Materials Processing Group, Engineering Physics Study Program, Institut Teknologi Bandung, Bandung 40132, Indonesia.,Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, Bandung 40132, Indonesia
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29
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Jacob Kizhakedathil MP, Suvarna S, Belur PD, Wongsagonsup R, Agoo EMG, Janairo JIB. Optimization of oxalate-free starch production from Taro flour by oxalate oxidase assisted process. Prep Biochem Biotechnol 2020; 51:105-111. [PMID: 32720840 DOI: 10.1080/10826068.2020.1795672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Taro (Colocasia esculenta) starch is known to possess unique physical and functional properties such as low amylose content, A-crystalline form, small granules, higher swelling power, etc. Due to the presence of significant amount of calcium oxalate crystals, the food industry is reluctant to explore this unique and cheap starch source for various food applications. Traditional processes utilizing various physical and chemical methods to remove oxalate content of starch inevitably change its physical and functional properties. However, using oxalate oxidase can effectively remove oxalates without altering the unique properties of starch. Hence, an attempt was made to optimize oxalate oxidase assisted starch extraction process from taro flour using response surface methodology. A central composite design comprising 20 experimental trials with 10 cube points augmented with six axial points and four replicates at the center point was applied. A mathematical model was developed to show the effect of taro flour concentration, enzyme load and incubation time on the oxalate removal. Validity of the model was experimentally verified and found that 98.3% of total oxalates can be removed under optimal conditions. This is the first report of optimization of the production of starch from taro flour using microbial oxalate oxidase.
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Affiliation(s)
| | - Suraksha Suvarna
- Department of Chemical Engineering, National Institute of Technology Karnataka, Mangalore, India
| | - Prasanna D Belur
- Department of Chemical Engineering, National Institute of Technology Karnataka, Mangalore, India
| | - Rungtiwa Wongsagonsup
- Division of Food Technology, Mahidol University Kanchanaburi Campus, Saiyok, Kanchanaburi, Thailand
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Calle J, Benavent-Gil Y, Rosell CM. Development of gluten free breads from Colocasia esculenta flour blended with hydrocolloids and enzymes. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105243] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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31
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Petropoulos SA, Sampaio SL, Di Gioia F, Tzortzakis N, Rouphael Y, Kyriacou MC, Ferreira I. Grown to be Blue-Antioxidant Properties and Health Effects of Colored Vegetables. Part I: Root Vegetables. Antioxidants (Basel) 2019; 8:E617. [PMID: 31817206 PMCID: PMC6943509 DOI: 10.3390/antiox8120617] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 11/30/2019] [Accepted: 12/03/2019] [Indexed: 01/03/2023] Open
Abstract
During the last few decades, the food and beverage industry faced increasing demand for the design of new functional food products free of synthetic compounds and artificial additives. Anthocyanins are widely used as natural colorants in various food products to replenish blue color losses during processing and to add blue color to colorless products, while other compounds such as carotenoids and betalains are considered as good sources of other shades. Root vegetables are well known for their broad palette of colors, and some species, such as black carrot and beet root, are already widely used as sources of natural colorants in the food and drug industry. Ongoing research aims at identifying alternative vegetable sources with diverse functional and structural features imparting beneficial effects onto human health. The current review provides a systematic description of colored root vegetables based on their belowground edible parts, and it highlights species and/or cultivars that present atypical colors, especially those containing pigment compounds responsible for hues of blue color. Finally, the main health effects and antioxidant properties associated with the presence of coloring compounds are presented, as well as the effects that processing treatments may have on chemical composition and coloring compounds in particular.
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Affiliation(s)
- Spyridon A. Petropoulos
- Crop Production and Rural Environment, Department of Agriculture, University of Thessaly, 38446 Nea Ionia, Greece
| | - Shirley L. Sampaio
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal;
| | - Francesco Di Gioia
- Department of Plant Science, The Pennsylvania State University, University Park, PA 16802, USA;
| | - Nikos Tzortzakis
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, 3603 Limassol, Cyprus;
| | - Youssef Rouphael
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy;
| | - Marios C. Kyriacou
- Department of Vegetable Crops, Agricultural Research Institute, 1516 Nicosia, Cyprus;
| | - Isabel Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal;
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Isolation, characterization, and microwave assisted surface modification of Colocasia esculenta (L.) Schott mucilage by grafting polylactide. Int J Biol Macromol 2018; 119:1090-1097. [DOI: 10.1016/j.ijbiomac.2018.08.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/01/2018] [Accepted: 08/08/2018] [Indexed: 11/24/2022]
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Taro starch (Colocasia esculenta) and citric acid modified taro starch as tablet disintegrating agents. Int J Biol Macromol 2018; 118:397-405. [DOI: 10.1016/j.ijbiomac.2018.06.086] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 06/16/2018] [Accepted: 06/18/2018] [Indexed: 11/23/2022]
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Pereira PR, Corrêa ACNTF, Vericimo MA, Paschoalin VMF. Tarin, a Potential Immunomodulator and COX-Inhibitor Lectin Found in Taro ( Colocasia esculenta). Compr Rev Food Sci Food Saf 2018; 17:878-891. [PMID: 32313515 PMCID: PMC7162284 DOI: 10.1111/1541-4337.12358] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 03/21/2018] [Accepted: 03/29/2018] [Indexed: 11/28/2022]
Abstract
Taro (Colocasia esculenta) corm is a rustic staple food, rich in small starch granules, fibers, and bioactive phytoconstituents such as flavonoids, alkaloids, sterols, tannins, phytates, micronutrients, and proteins, including tarin, a GNA-related lectin. Tarin exhibits recognized biocide activities against viruses and insects, has antitumoral properties and is an immunomodulator molecule candidate. It has been isolated in highly purified form (>90%) from taro corms through low-cost and single-step affinity chromatography. It comprises 2-domain 27 to 28 kDa protomer, posttranslational cleaved into 2 nonidentical monomers, 11.9 and 12.6 kDa, held by noncovalent binding. At least 10 tarin isoforms sharing over 70% similarity have been described. The monomers assume the β-prism II fold, consisting of 3 antiparallel β-sheets formed by 4 β-strands each. Tarin exhibits an expanded-binding site for complex and high-mannose N-glycan chains 49, 212, 213, 358, 465, and 477 found on cell surface antigens of viruses, insects, cancer, and hematopoietic cells, explaining its broad biological activities. Tarin may stimulate innate and adaptive immune responses, enabling hosts to recover from infections or immunosuppressed status inherent to several pathological conditions. In a murine model, tarin stimulates the in vitro and in vivo proliferation of total spleen and bone marrow cells, especially B lymphocytes. Granulocyte repopulation has also been demonstrated in long-term mice bone marrow cell cultures. As a potential immunomodulator, tarin, administered to immunosuppressed mice, attenuated cyclophosphamide-induced leukopenia. We propose a molecular model that unites the potential prophylactic and therapeutic action of tarin on hematopoietic and cancer cells, as a potential immunomodulator.
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Affiliation(s)
- Patricia Ribeiro Pereira
- Inst. de QuímicaUniv. Federal do Rio de JaneiroAvenida Athos da Silveira Ramos 149 ‐ 21941‐909 ‐ Rio de Janeiro (RJ)Brazil
| | | | - Mauricio Afonso Vericimo
- Inst. de BiologiaUniv. Federal FluminenseAlameda Barros Terra S/N ‐ 4020‐141‐ Niterói (RJ)Brazil
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Zhu X, Cui W, Zhang E, Sheng J, Yu X, Xiong F. Morphological and physicochemical properties of starches isolated from three taro bulbs. STARCH-STARKE 2017. [DOI: 10.1002/star.201700168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaowei Zhu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture & Agri-Product Safety; Yangzhou University; Yangzhou China
| | - Wenxue Cui
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture & Agri-Product Safety; Yangzhou University; Yangzhou China
| | - Erjin Zhang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture & Agri-Product Safety; Yangzhou University; Yangzhou China
| | - Jieyue Sheng
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture & Agri-Product Safety; Yangzhou University; Yangzhou China
| | - Xurun Yu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture & Agri-Product Safety; Yangzhou University; Yangzhou China
| | - Fei Xiong
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops/Joint International Research Laboratory of Agriculture & Agri-Product Safety; Yangzhou University; Yangzhou China
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Abera G, Solomon WK, Bultosa G. Effect of drying methods and blending ratios on dough rheological properties, physical and sensory properties of wheat-taro flour composite bread. Food Sci Nutr 2016; 5:653-661. [PMID: 28572954 PMCID: PMC5448375 DOI: 10.1002/fsn3.444] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/12/2016] [Accepted: 10/13/2016] [Indexed: 11/21/2022] Open
Abstract
The study was conducted to evaluate the effect of taro drying methods and blending ratios on the physical quality attributes and sensory quality of wheat–taro bread and rheological properties of the blend dough. Farinographic properties like water absorption capacity, dough development time, dough stability time, time to break down, mixing tolerance index, and farinographic quality number were significantly (p < .05) affected by drying methods and blending ratio and their interaction. Increased taro flour (10–20 g) per 100 g of wheat flour resulted in an increased water absorption capacity (57.38%–58.23%) and mixing tolerance index (67.33–70.21 FU). The sensory analysis had revealed that as taro flour blending ratio increased the acceptability of blended breads were reduced. With respect to physical and sensory properties, the control bread had better acceptability than that of 10, 15, and 20 g taro flour‐mixed bread. The study revealed that there is possibility of incorporating taro flour up to 15 g per 100 g of wheat flour with acceptable sensory attributes of the composite bread.
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Affiliation(s)
- Gidmwork Abera
- Department of Food Science and Postharvest Technology Adama Science and Technology University Assela Ethiopia
| | - W K Solomon
- Department of Food and Nutrition Sciences Faculty of Consumer Sciences University of Swaziland Luyengo Swaziland
| | - Geremew Bultosa
- Department of Food Science and Technology Botswana University of Agriculture and Natural Resources Gaborone Botswana
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Drying kinetics of millet, poamce and wheat based pasta and its effect on microstructure, color, water absorption and pasting properties. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2016. [DOI: 10.1007/s11694-016-9437-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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38
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Paz-Gamboa E, Ramírez-Figueroa E, Vivar-Vera M, Bravo-Delgado H, Cortés-Zavaleta O, Ruiz-Espinosa H, Ruiz-López I. Study of oil uptake during deep-fat frying of Taro (Colocasia esculenta) chips. CYTA - JOURNAL OF FOOD 2015. [DOI: 10.1080/19476337.2015.1010587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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