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Guo Q, Chen L, Yang D, Zheng B. Heat-moisture treatment enhances the ordered degree of starch structure in whole chestnut flour and alters its gut microbiota modulation in mice fed with high-fat diet. Int J Biol Macromol 2024; 254:127961. [PMID: 37951440 DOI: 10.1016/j.ijbiomac.2023.127961] [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: 08/09/2023] [Revised: 10/26/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
Currently, chestnuts attract more attention among consumers due to its rich nutritional functions, but systematic evaluation on the effect of thermal processing on its nutritional value is still limited. In this work, based on results of microstructural properties that heat-moisture treatment (HMT) could enhance the total ordered degree of starch structure in whole chestnut flour (CN) and promote the formation of anti-enzymatic component, in vitro experiment was then conducted and confirmed that HMT could significantly reduce the predicted glycemic index (pGI) of CN from 75.6 to 64.3 and improve its dietary fiber content from 7.06 to 13.42 g/100 g (p < 0.05). Further dietary intervention studies with CN and heat-moisture treated CN (HMT-CN) supplementation on the high-fat diet (HFD) consuming mice were discussed in terms of gut microbiota and its metabolites changes. The results showed that both CN and HMT-CN significantly resisted the weight gain induced by HFD, while HMT-CN had better serum lipid regulation effect. However, they had different effects on the gut metabolism pathways, among which CN inhibited the production of stearamine by promoting the proliferation of Dubosiella, while HMT-CN contributed to the growth of Lachnoclostridium, Desulfovibrio, and Faecalibaculum which stimulated the formation of associated metabolites including jwh-018-d11, valylproline, tetranor-12(S)-HETE, and PA (3:0/18:0). Overall, these discoveries could provide basic data for the effective utilization of CN in food industry processing.
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Affiliation(s)
- Qiyong Guo
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Ling Chen
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China.
| | - Deyi Yang
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China
| | - Bo Zheng
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China.
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2
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Montemurro M, Beccaccioli M, Perri G, Rizzello CG, Reverberi M, Pontonio E. A chestnut-hemp type-II sourdough to improve technological, nutritional, and sensory properties of gluten-free bread. Int J Food Microbiol 2023; 404:110322. [PMID: 37454506 DOI: 10.1016/j.ijfoodmicro.2023.110322] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 06/19/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
The nutritional quality of gluten-free (GF) products is usually improved by using flours derived from alternative grains (e.g., pseudocereals and legumes), additives and hydrolysates, leading to long ingredient lists in the labels, that conflict with current customer expectations. In this work, chestnut, carob, and hemp flours were used as mixed ingredients for making a gluten-free type-II sourdough. Three exopolysaccharides-producer lactic acid bacteria, belonging to Leuconostoc mesenteroides, Weissella cibaria, and Leuconostoc pseudomesenteroides, were used, and the fermentation processes (6 log10 cfu/g, 25 °C, 16 h) optimize to maximize the EPS synthesis (15.70 ± 2.1 mg/kg). The chestnut-hemp (70:30) type-II sourdough was included in a rice/corn gluten-free bread recipe also containing psyllium flour as structuring agent. Although the fortification with unfermented flours already led the achievement of 6 g/100 g of fiber (high fiber, Regulation EC n. 1924/2006) and content of magnesium higher than the daily reference intakes, the use of type-II sourdoughs led to a further structural, sensory, and nutritional improvements (e.g., decreasing the main anti-nutritional factor phytic acid). This work demonstrated that the use of ad-hoc selected ingredients and optimized protocol can be used to produce a GF and "clean label" bread with optimal nutritional features and appreciable sensory and structural properties.
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Affiliation(s)
- Marco Montemurro
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy; National Research Council of Italy, Institute of Sciences of Food Production (CNR-ISPA), 70126 Bari, Italy
| | - Marzia Beccaccioli
- Department of Environmental Biology, "Sapienza" University of Rome, Rome, Italy
| | - Giuseppe Perri
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | | | - Massimo Reverberi
- Department of Environmental Biology, "Sapienza" University of Rome, Rome, Italy
| | - Erica Pontonio
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy.
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Yang F, Wei D, Li J, Xie C. Chestnut shell represents a rich source of polyphenols: preparation methods, antioxidant activity and composition analysis of extractable and non-extractable polyphenols. Eur Food Res Technol 2023. [DOI: 10.1007/s00217-023-04212-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Quality and Technological Properties of Flour with the Addition of Aesculus Hippocastanum and Castanea Sativa. ACTA UNIVERSITATIS CIBINIENSIS. SERIES E: FOOD TECHNOLOGY 2022. [DOI: 10.2478/aucft-2022-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
The study of alternative food sources or ingredients that can partially replace or enrich today’s food is a perspective direction. The possibility of using horse chestnut (Aesculus hippocastanum) and chestnut (Castanea sativa) fruits in the baking industry as an admixture to wheat flour has been determined. The addition of flours from these fruits at a level of 10% increases the number of minerals in the flour mixture and also enriches the mixture in saponins, coumarins, and tannins. However, it is necessary to remove excess saponins from horse chestnut. The amylograph has shown that flour from horse chestnut fruit has optimal parameters for baking mixed bread. Farinograph tests showed that a 10% addition of ground horse chestnut to wheat flour had the best baking properties. Mixtures with 10 and 15% chestnut addition showed the best baking characteristic.
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Gómez M. Gluten-free bakery products: Ingredients and processes. ADVANCES IN FOOD AND NUTRITION RESEARCH 2022; 99:189-238. [PMID: 35595394 DOI: 10.1016/bs.afnr.2021.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
There is an increasing demand for gluten-free products around the world because certain groups of people, which have increased in the last decades, need to eliminate gluten from their diet. A growing number of people consider gluten-free products to be healthier. However, making gluten-free products such as bread is a technological challenge due to the important role of the gluten network in their development. However, other products, such as cakes and cookies usually made with wheat flour, can easily be made with gluten-free starches or flours since gluten does not play an essential role in their production. To replace wheat flour in these elaborations it is necessary to resort to gluten-free starches and/or flours and to gluten substitutes. Additionally, it can be convenient to incorporate other ingredients such as proteins, fibers, sugars or oils, as well as to modify their quantities in wheat flour formulations. Regarding gluten-free flours, it will also be necessary to know the parameters that influence their functionality in order to obtain regular products. These problems have originated a lower availability of gluten-free products which have a worse texture and are less tasty and more expensive than their homologues with gluten. These problems have been partially solved thanks to research on these types of products, their ingredients and their production methods. In recent years, studies about the nutritional improvement of these products have increased. This chapter delves into the main ingredients used in the production of gluten-free products, the processes for making gluten-free breads, cakes and cookies, and the nutritional quality of these products.
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Affiliation(s)
- Manuel Gómez
- Food Technology Area, College of Agricultural Engineering, University of Valladolid, Palencia, Spain.
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6
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Haghighi TM, Saharkhiz MJ, Khalesi M, Mousavi SS, Ramezanian A. Eco-friendly 'ochratoxin A' control in stored licorice roots - quality assurance perspective. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1321-1336. [PMID: 35594289 DOI: 10.1080/19440049.2022.2077460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
According to toxicity data, ochratoxin A (OTA) is the second most important mycotoxin and is produced by Aspergillus and Penicillium. As a natural antifungal agent, clove essential oil (CEO) is a substance generally recognised as safe (GRAS) and shows strong activity against fungal pathogens. Here, we aimed to investigate the control efficacy of CEO in nano-emulsions (CEN) against OTA production in licorice roots and rhizomes during storage. The experiments were performed under simulated conditions of all four seasons (i.e. Spring, Summer, Autumn and Winter). Relative humidity (RH) and temperature were simulated in desiccators along with various salt solutions in incubators. Fresh licorice roots were immersed in CEN at various concentrations (150, 300, 600, 1200 and 2400 µl/l). Before utilising the nano-emulsions, we measured their polydispersity index and mean droplet size by the dynamic light scattering (DLS) technique. Also, the chemical composition of the CEO was determined using GC and GC-MS analyses. Sampling was carried out to monitor OTA once every five days. The samples were dried immediately and analysed by high-performance liquid chromatography (HPLC). Results showed that various concentrations of CEN inhibited the growth of fungi and OTA production. The most effective CEN concentrations were 1200 and 2400 µl/l, which reduced OTA production to 19 and 20 ppb under Winter and Autumn conditions, respectively. These results suggest an effective eco-friendly method for the storage of licorice to reduce postharvest fungal decay.
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Affiliation(s)
| | - Mohammad Jamal Saharkhiz
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran.,Medicinal Plants Processing Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammadreza Khalesi
- Department of Biological Sciences, School of Natural Sciences, University of Limerick, Limerick, Ireland
| | - Seyyed Sasan Mousavi
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Asghar Ramezanian
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
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7
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Gallego C, Belorio M, Guerra‐Oliveira P, Gómez M. Effects of adding chickpea and chestnut flours to layer cakes. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cristina Gallego
- Food Technology Area College of Agricultural Engineering University of Valladolid Palencia 34071 Spain
| | - Mayara Belorio
- Food Technology Area College of Agricultural Engineering University of Valladolid Palencia 34071 Spain
| | - Priscila Guerra‐Oliveira
- Food Technology Area College of Agricultural Engineering University of Valladolid Palencia 34071 Spain
| | - Manuel Gómez
- Food Technology Area College of Agricultural Engineering University of Valladolid Palencia 34071 Spain
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8
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Development of a New Pasta Product by the Incorporation of Chestnut Flour and Bee Pollen. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11146617] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
This work aimed at developing fortified pastas incorporating chestnut flour (25–55%) and powdered pollen (5–20%), either separately or in combination, as well as the characterization of the products obtained. To this, a physical characterization was carried out (analyzing texture and color), complemented with chemical analyses to determine the nutritional composition. Results showed that adding chestnut flour over 40% to wheat-flour pasta shortened optimum cooking time and lowered cooking yield, and the addition to pasta prepared with wheat flour and eggs maintained approximately constant the cooking yield. Additionally, the incorporation of pollen powder (up to 20%) in pasta prepared with wheat flour and water or fresh egg shortened the cooking time and cooking yield, in both fresh and dried pasta. The most suitable percentages of the new ingredients were 50% for chestnut and 10% for pollen. Comparing with the control pasta recipe (wheat flour and egg), the addition of chestnut flour (50%) or pollen powder (10%) increased stickiness, adhesiveness and the darkening of the final product (fresh or dried) but maintained the firmness of the pasta. The cooking of fresh or dried pasta enriched with both ingredients turned the pasta clearer and slightly stickier. On the other hand, the addition of chestnut flour and pollen powder in pasta formulation delivered a nutritionally balanced product with high fiber, vitamins and minerals. Overall, chestnut flour and powdered pollen represent promising ingredients for the development of functional fresh and dried pasta formulations.
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10
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Hernandez-Aguilar C, Dominguez-Pacheco A, Valderrama-Bravo C, Cruz-Orea A, Martínez Ortiz E, Ordonez-Miranda J. Photoacoustic Spectroscopy in the Characterization of Bread with Turmeric Addition. FOOD BIOPROCESS TECH 2020. [DOI: 10.1007/s11947-020-02546-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Beccaro GL, Donno D, Lione GG, De Biaggi M, Gamba G, Rapalino S, Riondato I, Gonthier P, Mellano MG. Castanea spp. Agrobiodiversity Conservation: Genotype Influence on Chemical and Sensorial Traits of Cultivars Grown on the Same Clonal Rootstock. Foods 2020; 9:E1062. [PMID: 32764341 PMCID: PMC7465019 DOI: 10.3390/foods9081062] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 12/23/2022] Open
Abstract
A large species diversity characterises the wide distribution of chestnuts in Asia, North America, and Europe, hence reflecting not only the adaptation of the genus Castanea to diverse environmental conditions, but also to different management strategies encompassing orchards. The characterisation and description of chestnut populations and cultivars are crucial to develop effective conservation strategies of one of the most important Italian and European fruit and wood species. Chestnut cultivars grown in the same pedoclimatic conditions and on the same clonal rootstock were characterised with sensory, spectrophotometric, and chromatographic analysis to determine the phytochemical composition and nutraceutical properties. A multivariate approach, including principal component analysis and conditional inference tree models, was also performed. The ease of peeling, seed colour, and intensity of sweetness were the sensory descriptors that allowed us to differentiate C. sativa cultivars. Antioxidant capacity ranged from 9.30 ± 0.39 mmol Fe+2 kg-1 DW ('Bouche de Bètizac') to 19.96 ± 1.89 mmol Fe+2 kg-1 DW ('Garrone Rosso'). Monoterpenes represented the main component, reaching 88% for hybrids, followed by polyphenols (10-25% for hybrids and chestnuts, respectively). A multivariate approach showed that phenolic acids and tannins were the bioactive classes with the highest discriminating power among different genotypes, and that genotype is a significant variable (p < 0.05). In addition, most of the analysed chestnut cultivars showed a content of bioactive compounds similar to or higher than the main hazelnut, walnut, and almond varieties. Chestnut agrobiodiversity could be intended as strictly associated to the genotype effect and underlines the large variability within the genus Castanea, and therefore, the importance of in farm and ex situ conservation of local germplasm is part of a global strategy aimed at increasing the levels of agrobiodiversity.
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Affiliation(s)
- Gabriele L. Beccaro
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
- Chestnut R&D Center—Piemonte, 12013 Chiusa di Pesio, Italy
| | - Dario Donno
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
- Chestnut R&D Center—Piemonte, 12013 Chiusa di Pesio, Italy
| | - Guglielmo Gianni Lione
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
- Chestnut R&D Center—Piemonte, 12013 Chiusa di Pesio, Italy
| | - Marta De Biaggi
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
| | - Giovanni Gamba
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
| | - Sabrina Rapalino
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
| | - Isidoro Riondato
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
| | - Paolo Gonthier
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
- Chestnut R&D Center—Piemonte, 12013 Chiusa di Pesio, Italy
| | - Maria Gabriella Mellano
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, 10124 Torino, Italy; (G.L.B.); (G.G.L.); (M.D.B.); (G.G.); (S.R.); (I.R.); (P.G.); (M.G.M.)
- Chestnut R&D Center—Piemonte, 12013 Chiusa di Pesio, Italy
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Content of Phenolic Compounds and Antioxidant Activity of New Gluten-Free Pasta with the Addition of Chestnut Flour. Molecules 2019; 24:molecules24142623. [PMID: 31323897 PMCID: PMC6680859 DOI: 10.3390/molecules24142623] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/17/2019] [Accepted: 07/18/2019] [Indexed: 12/21/2022] Open
Abstract
Chestnut fruit abounds in carbohydrates, proteins, unsaturated fatty acids, fiber, polyphenolic compounds, as well as vitamins and micronutrients, that are behind the health-promoting properties of this plant. The purpose of the discussed research was to obtain innovative gluten-free pasta from rice and field bean flour enriched with a various addition of chestnut flour. Regarding the studied pasta, the following were determined: the content of free phenolic acids, total polyphenols, and antioxidant properties. Chromatographic analysis (HPLC-ESI-MS/MS (high-performance liquid chromatography-electrospray ionization tandem mass spectrometry)) revealed a wide variety of phenolic acids. In a sample with 20% and higher content of chestnut flour, as many as 13 acids were detected. Isoferulic acid prevailed. The total content of free phenolic acids and total polyphenols increased along with the increasing chestnut content. Moreover, in most cases, the content of individual acids increased with the addition of chestnut flour. Besides, the antioxidant activity was positively correlated with the addition of chestnut fruit flour, the content of free phenolic acids, and total polyphenols. Our research has demonstrated that our innovative gluten-free pasta, with the addition of chestnut flour, has a potential to be a source of polyphenolic compounds, including free phenolic acids, that are valuable for human health.
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Borges A, Fonseca C, Carreira F, Rodrigues I, Henriques M, Veloso ACA, Peres AM. Valorisation of frozen chestnut by-products: technological challenges for the production of gluten-free flour. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2019. [DOI: 10.1007/s11694-018-9999-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fariña M, Torres MD, Moreira R. Starch hydrogels from discarded chestnuts produced under different temperature‐time gelatinisation conditions. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14070] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Fariña
- Department of Chemical Engineering Universidade de Santiago de Compostela rúa Lope Gómez de Marzoa Santiago de Compostela E‐15782 Spain
| | - María Dolores Torres
- Department of Chemical Engineering Universidade de Santiago de Compostela rúa Lope Gómez de Marzoa Santiago de Compostela E‐15782 Spain
| | - R. Moreira
- Department of Chemical Engineering Universidade de Santiago de Compostela rúa Lope Gómez de Marzoa Santiago de Compostela E‐15782 Spain
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Zhang L, Liu T, Hu G, Guo K, Wei C. Comparison of Physicochemical Properties of Starches from Nine Chinese Chestnut Varieties. Molecules 2018; 23:molecules23123248. [PMID: 30544638 PMCID: PMC6321317 DOI: 10.3390/molecules23123248] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/01/2018] [Accepted: 12/04/2018] [Indexed: 01/26/2023] Open
Abstract
Chestnut is a popular food in many countries and is also an important starch source. In previous studies, physicochemical properties of starches have been compared among different Chinese chestnut varieties growing under different conditions. In this study, nine Chinese chestnut varieties from the same farm were investigated for starch physicochemical properties to exclude the effects of growing conditions. The dry kernels had starch contents from 42.7 to 49.3%. Starches from different varieties had similar morphologies and exhibited round, oval, ellipsoidal, and polygonal shapes with a central hilum and smooth surface. Starch had bimodal size distribution and the volume-weighted mean diameter ranged from 7.2 to 8.2 μm among nine varieties. The starches had apparent amylose contents from 23.8 to 27.3% but exhibited the same C-type crystalline structure and similar relative crystallinity, ordered degree, and lamellar structure. The gelatinization onset, peak, and conclusion temperatures ranged from 60.4 to 63.9 °C, from 64.8 to 68.3 °C, and from 70.5 to 74.5 °C, respectively, among nine starches; and the peak, hot, breakdown, final, and setback viscosities ranged from 5524 to 6505 mPa s, from 3042 to 3616 mPa s, from 2205 to 2954 mPa s, from 4378 to 4942 mPa s, and from 1326 to 1788 mPa s, respectively. The rapidly digestible starch, slowly digestible starch, and resistant starch ranged from 2.6 to 3.7%, from 5.7 to 12.7%, and from 84.4 to 90.7%, respectively, for native starch, and from 79.6 to 89.5%, from 1.3 to 3.8%, and from 7.1 to 17.4%, respectively, for gelatinized starch.
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Affiliation(s)
- Long Zhang
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province / Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province / Joint International Research Laboratory of Agriculture & Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
| | - Tianxiang Liu
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province / Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province / Joint International Research Laboratory of Agriculture & Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
| | - Guanglong Hu
- Institute of Forest and Pomology, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100093, China.
| | - Ke Guo
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province / Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province / Joint International Research Laboratory of Agriculture & Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
| | - Cunxu Wei
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province / Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
- Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province / Joint International Research Laboratory of Agriculture & Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou 225009, China.
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