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Asfaw TB, Woldemariam HW, Tadesse MG, Tessema FB, Admassie ZG, Esho TB. Method optimization for the determinations of selected phytochemicals and antioxidant activities of wild Ethiopian Syzygium guineense fruit and seed under different drying conditions. Heliyon 2023; 9:e16227. [PMID: 37274648 PMCID: PMC10238900 DOI: 10.1016/j.heliyon.2023.e16227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 04/19/2023] [Accepted: 05/11/2023] [Indexed: 06/06/2023] Open
Abstract
This study aimed to optimize the ultrasound-assisted extraction (UAE) parameters using response surface methodology (RSM) for the determination of ascorbic acid (AA), antioxidant activities/the half maximal effective concentration (EC50), total phenolic contents (TPC), and total flavonoid content (TFC) of Ethiopian wild Syzygium guineense fruit and seed processed under different drying conditions. The optimizations of the UAE methods for the determination of AA, antioxidant activities (EC50 values), TPC, and TFC were evaluated using response surface methodology (RSM). The extraction time of 15 min, the temperature of 35 °C, extraction solvent composition (methanol:water) of 75 to 25%, and solid-to-solvent ratios of 1:15 w/v were the optimum independent parameters. The experimental and the predicted data of TPC, EC50, and AA were in good agreement with the overall error below 0.01%. It also indicated a hypothesized distribution of predicted data fitted with experimental data. The average TPC, EC50, and AA content in S. guineense fruits and the seed varied from 581.25 ± 37.13 to 1917.40 ± 26.15 mg GAE/100 g, 4.02 ± 0.42 to 155.73 ± 5.11 mg/100 g, and 1.96 ± 0.02 to 0.94 ± 0.00 mg/mL, respectively. This study indicated that this underutilized wild fruit and its seeds can be an alternative source of AA and antioxidant compounds.
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Affiliation(s)
- Tilahun Belayneh Asfaw
- Department of Industrial Chemistry, College of Applied Sciences, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
- Center of Excellence for Biotechnology and Bioprocess, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
- Department of Chemistry, College of Natural and Computational Sciences, University of Gondar, Gondar, Ethiopia
| | - Henock Woldemichael Woldemariam
- Department of Chemical Engineering, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
- Center of Excellence for Biotechnology and Bioprocess, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
| | - Mesfin Getachew Tadesse
- Department of Industrial Chemistry, College of Applied Sciences, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
- Center of Excellence for Biotechnology and Bioprocess, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
| | - Fekade Beshah Tessema
- Department of Industrial Chemistry, College of Applied Sciences, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
- Center of Excellence for Biotechnology and Bioprocess, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
- Department of Chemistry, Natural and Computational Sciences Faculty, Woldia University, Woldia, Ethiopia
| | | | - Tarekegn Berhanu Esho
- Department of Industrial Chemistry, College of Applied Sciences, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
- Center of Excellence for Biotechnology and Bioprocess, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
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Li S, Liu F, Wu M, Li Y, Song X, Yin J. Effects of Drying Treatments on Nutritional Compositions, Volatile Flavor Compounds, and Bioactive Substances of Broad Beans. Foods 2023; 12:foods12112160. [PMID: 37297405 DOI: 10.3390/foods12112160] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
In this study, different drying methods, including hot air drying, sun drying, and freeze drying were employed to dry fresh broad beans. The nutritional composition, volatile organic components and bioactive substances of the dried broad beans were systematically compared. The results indicated significant differences (p < 0.05) in nutritional composition, such as protein and soluble sugar content. Among the 66 identified volatile organic compounds, freeze drying and hot air drying significantly promote the production of alcohols and aldehydes, while sun drying effectively preserves esters. In terms of bioactive substances, broad beans dried by freeze drying exhibit the highest total phenol content as well as the strongest antioxidant capacity and gallic acid, followed by sun drying. The chemometric analysis revealed that the bioactive compounds in broad beans dried by three different methods were primarily composed of flavonoids, organic acids, and amino acids with significant differentiation. Notably, freeze-dried and sun-dried broad beans exhibited a higher concentration of differential substances.
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Affiliation(s)
- Si Li
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Fangwei Liu
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Mulan Wu
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Yuhao Li
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Xiaoxiao Song
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
| | - Junyi Yin
- State Key Laboratory of Food Science and Resources, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, Nanchang 330047, China
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3
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Maisl C, Doppler M, Seidl B, Bueschl C, Schuhmacher R. Untargeted Plant Metabolomics: Evaluation of Lyophilization as a Sample Preparation Technique. Metabolites 2023; 13:686. [PMID: 37367843 DOI: 10.3390/metabo13060686] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/10/2023] [Accepted: 05/15/2023] [Indexed: 06/28/2023] Open
Abstract
Lyophilization is a common method used for stabilizing biological samples prior to storage or to concentrate extracts. However, it is possible that this process may alter the metabolic composition or lead to the loss of metabolites. In this study, the performance of lyophilization is investigated in the example of wheat roots. To this end, native and 13C-labelled, fresh or already lyophilized root samples, and (diluted) extracts with dilution factors up to 32 and authentic reference standards were investigated. All samples were analyzed using RP-LC-HRMS. Results show that using lyophilization for the stabilization of plant material altered the metabolic sample composition. Overall, 7% of all wheat metabolites detected in non-lyophilized samples were not detected in dried samples anymore, and up to 43% of the remaining metabolites exhibited significantly increased or decreased abundances. With respect to extract concentration, less than 5% of the expected metabolites were completely lost by lyophilization and the recovery rates of the remaining metabolites were slightly reduced with increasing concentration factors to an average of 85% at an enrichment factor of 32. Compound annotation did not indicate specific classes of wheat metabolites to be affected.
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Affiliation(s)
- Christina Maisl
- Department of Agrobiotechnology IFA-Tulln, Institute of Bioanalytics and Agro-Metabolomics, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Maria Doppler
- Department of Agrobiotechnology IFA-Tulln, Institute of Bioanalytics and Agro-Metabolomics, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
- Core Facility Bioactive Molecules: Screening and Analysis, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Bernhard Seidl
- Department of Agrobiotechnology IFA-Tulln, Institute of Bioanalytics and Agro-Metabolomics, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Christoph Bueschl
- Department of Agrobiotechnology IFA-Tulln, Institute of Bioanalytics and Agro-Metabolomics, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Rainer Schuhmacher
- Department of Agrobiotechnology IFA-Tulln, Institute of Bioanalytics and Agro-Metabolomics, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
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García-Valladares O, Lucho-Gómez AM, Montiel-Baltazar EA, Castañeda-Vázquez M, Ortiz-Sánchez CA, Castillo-Téllez B, Luna-Solano G, Domínguez-Niño A. Effect of Modified Solar Dryers on Colorimetric and Physicochemical Properties of Pumpkin Flower (Cucurbita maxima). PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2023; 78:139-145. [PMID: 36370292 DOI: 10.1007/s11130-022-01032-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/04/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to evaluate the solar dryers' cover material effects on the colorimetric and physicochemical properties of pumpkin flowers (Cucurbita maxima). A direct cabinet solar dryer was designed using three cover types: polycarbonate, polyethylene, and aluminum with selective surface (titanium oxide coating). A unifactorial experimental design with three levels was adopted. Pumpkin flower stability was assured by reducing the initial moisture content (95.22%) and water activity (0.989) to 3.15% and 0.276 in the polycarbonate dryer, to 3.03% and 0.279 in the selective surface dryer, and 5.19% and 0.364 in the polyethylene dryer. The drying kinetics showed that the drying time needed to achieve the moisture equilibrium was 480, 540, and 720 min in the respective dryers, depending on the ambient conditions. The initial pumpkin flower hue angle was 76.52°; however, this value decreased to 74.81, 69.52, and 70.23° in the dryers with polycarbonate, polyethylene, and the selective surface respectively; this behavior indicates a pumpkin flower tendency to orange color. The dryer with the selective surface obtained the best properties in pumpkin flowers. The pumpkin flower showed an initial total soluble solid of 1.5°Brix increased to 30°Brix in the polycarbonate and polyethylene dryers and 39°Brix in the selective dryer. The titanium oxide dryer observed an increment in ascorbic acid content from 3.5 to 8.806 mg/100 g, whereas 6.45 and 5.87 mg/100 g in the polycarbonate and polyethylene dryer, respectively.
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Affiliation(s)
- Octavio García-Valladares
- Departamento de Sistemas Energéticos, Instituto de Energías Renovables-UNAM, Temixco, Morelos, México
| | - Ana María Lucho-Gómez
- Departamento de Sistemas Energéticos, Instituto de Energías Renovables-UNAM, Temixco, Morelos, México
| | | | - Marian Castañeda-Vázquez
- Departamento de Sistemas Energéticos, Instituto de Energías Renovables-UNAM, Temixco, Morelos, México
| | | | - Beatriz Castillo-Téllez
- Departamento de Agua Y Energía, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá, Jalisco, México.
| | - Guadalupe Luna-Solano
- División de Estudios de Posgrado E Investigación, Instituto Tecnológico de Orizaba, Orizaba, Veracruz, México
| | - Alfredo Domínguez-Niño
- Departamento de Sistemas Energéticos, Instituto de Energías Renovables-UNAM, Temixco, Morelos, México.
- Dirección Adjunta de Desarrollo Científico, Consejo Nacional de Ciencia Y Tecnología-Cátedra CONACYT, Mexico City, Mexico.
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Dujmović M, Radman S, Opačić N, Fabek Uher S, Mikuličin V, Voća S, Šic Žlabur J. Edible Flower Species as a Promising Source of Specialized Metabolites. PLANTS (BASEL, SWITZERLAND) 2022; 11:2529. [PMID: 36235395 PMCID: PMC9570977 DOI: 10.3390/plants11192529] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 01/22/2023]
Abstract
Eating habits are changing over time and new innovative nutrient-rich foods will play a great role in the future. Awareness of the importance of a healthy diet is growing, so consumers are looking for new creative food products rich in phytochemicals, i.e., specialized metabolites (SM). The consumption of fruits, vegetables and aromatic species occupies an important place in the daily diet, but different edible flower species are still neglected and unexplored. Flowers are rich in SM, have strong antioxidant capacities and also possess significant functional and biological values with favorable impacts on human health. The main aim of this study was to evaluate the content of SM and the antioxidant capacities of the edible flower species: Calendula officinalis L. (common marigold), Tagetes erecta L. (African marigold), Tropaeolum majus L. (nasturtium), Cucurbita pepo L. convar. giromontiina (zucchini) and Centaurea cyanus L. (cornflower). The obtained results showed the highest content of ascorbic acid (129.70 mg/100 g fw) and anthocyanins (1012.09 mg/kg) recorded for cornflower, phenolic compounds (898.19 mg GAE/100 g fw) and carotenoids (0.58 mg/g) for African marigold and total chlorophylls (0.75 mg/g) for common marigold. In addition to the esthetic impression of the food, they represent an important source of SM and thus can have a significant impact if incorporated in the daily diet.
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Affiliation(s)
- Mia Dujmović
- Department of Agricultural Technology, Storage and Transport, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Sanja Radman
- Department of Vegetable Crops, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Nevena Opačić
- Department of Vegetable Crops, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Sanja Fabek Uher
- Department of Vegetable Crops, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Vida Mikuličin
- Department of Agricultural Technology, Storage and Transport, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Sandra Voća
- Department of Agricultural Technology, Storage and Transport, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
| | - Jana Šic Žlabur
- Department of Agricultural Technology, Storage and Transport, University of Zagreb Faculty of Agriculture, Svetošimunska cesta 25, 10000 Zagreb, Croatia
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Metabolomics-based profiling for quality assessment and revealing the impact of drying of Turmeric (Curcuma longa L.). Sci Rep 2022; 12:10288. [PMID: 35717541 PMCID: PMC9206664 DOI: 10.1038/s41598-022-13882-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/05/2022] [Indexed: 01/09/2023] Open
Abstract
Turmeric, the rhizomes of Curcuma longa L., is one of the top selling spices, food preservatives, and food colorants. In addition, it exhibits health promoting benefits owing to its unique phytochemical composition. Nevertheless, it is commonly subjected to heat drying, hence, the dried powder is the most used form and can easily be adulterated with allied species. Therefore, our research aimed to profile the phytochemical composition and investigate the impact of drying of turmeric. Extraction and fractionation followed by LC- and GC–MS analysis resulted in the identification of a total of 161 metabolites belonged to various phytochemical classes. Moreover, multivariate data analysis identified curcuminoids, terpecurcumins, and organic acids as potential markers for drying. Based on the applied analytical techniques in combination with chemometrics, these investigations have succeeded to provide good coverage of the metabolome of turmeric in both fresh and dried forms.
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Postharvest Treatments on Sensorial and Biochemical Characteristics of Begonia cucullata Willd Edible Flowers. Foods 2022; 11:foods11101481. [PMID: 35627052 PMCID: PMC9141419 DOI: 10.3390/foods11101481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/09/2022] [Accepted: 05/17/2022] [Indexed: 01/21/2023] Open
Abstract
Edible flowers (EFs) are currently consumed as fresh products, but their shelf life can be extended by a suitable drying technique, avoiding the loss of visual quality and valuable nutraceutical properties. Begonia cucullata Willd is a common ornamental bedding plant, and its leaves and flowers are edible. In this work, B. cucullata red flowers were freeze-dried (FD) and hot-air dried (HAD) at different temperatures. To the best of our knowledge, our study is the first one comparing different drying methodologies and different temperatures involving sensory characterization of EFs; therefore, a codified method for the description of the sensory profile of both fresh and dried B. cucullata was developed and validated. Phytochemical analyses highlighted the better preservation of antioxidant compounds (polyphenols, flavonoids and anthocyanins) for flowers dried at 60–70 °C. Visual quality was strongly affected by the drying treatments; in particular the color of the HAD samples significantly turned darker, whereas the FD samples exhibited a marked loss of pigmentation. Although all drying conditions led to a reduction in the hedonic indices if compared with fresh flowers, the best results in terms of organoleptic properties were obtained when the drying temperature was set to 60 or 70 °C.
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Mariutti LRB, Rebelo KS, Bisconsin-Junior A, de Morais JS, Magnani M, Maldonade IR, Madeira NR, Tiengo A, Maróstica MR, Cazarin CBB. The use of alternative food sources to improve health and guarantee access and food intake. Food Res Int 2021; 149:110709. [PMID: 34600699 DOI: 10.1016/j.foodres.2021.110709] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 09/03/2021] [Accepted: 09/03/2021] [Indexed: 12/18/2022]
Abstract
To feed and provide Food Security to all people in the world is a big challenge to be achieved with the 2030 Agenda. Undernutrition and obesity are to the opposite of a healthy nutritional status. Both conditions are associated with unbalanced nutrition, absence of food or excess of non-nutritive foods intake. These two nutritional conditions associated with food production are closely related to some goals highlighted by the United Nations in the 2030 Agenda to achieve sustainable world development. In this context, the search for alternative foods whose sustainable production and high nutritional quality guarantee regular access to food for the population must be encouraged. Alternative foods can contribute to Food Security in many ways as they contribute to the local economy and income generation. Popularizing and demystifying the uses of unconventional food plants, ancestral grains, flowers, meliponiculture products, and edible insects as sources of nutrients and non-nutrients is another challenge. Herein, we present an overview of alternative foods - some of them cultivated mostly in Brazil - that can be explored as sources of nutrients to fight hunger and malnutrition, improve food production and the economic growth of nations.
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Affiliation(s)
| | | | - Antonio Bisconsin-Junior
- School of Food Engineering, University of Campinas, Campinas, SP, Brazil; Federal Institute of Rondônia, Ariquemes/RO, Brazil
| | - Janne Santos de Morais
- Department of Food Engineering Centro de Tecnologia, Universidade Federal da Paraíba, Paraíba, Brazil
| | - Marciane Magnani
- Department of Food Engineering Centro de Tecnologia, Universidade Federal da Paraíba, Paraíba, Brazil
| | | | - Nuno Rodrigo Madeira
- Laboratory of Food Science and Techonology, Embrapa Hortaliças, Distrito Federal, Brazil
| | - Andrea Tiengo
- Universidade do Vale do Sapucaí, Pouso Alegre, MG, Brazil
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In vitro antibacterial activity of Hibiscus rosa sinensis, Chrysanthemum indicum, and Calendula officinalis flower extracts against Gram negative and Gram positive food poisoning bacteria. ADVANCES IN TRADITIONAL MEDICINE 2021. [DOI: 10.1007/s13596-021-00562-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kolla MC, Laya A, Bayang JP, Koubala BB. Effect of different drying methods and storage conditions on physical, nutritional, bioactive compounds and antioxidant properties of doum ( Hyphaene thebaica) fruits. Heliyon 2021; 7:e06678. [PMID: 33889782 PMCID: PMC8050005 DOI: 10.1016/j.heliyon.2021.e06678] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/23/2020] [Accepted: 03/29/2021] [Indexed: 01/12/2023] Open
Abstract
The present study reports effect of various drying and storage conditions on physical, bioactive compounds, and antioxidant properties of doum (H. thebaica) fruit for the first time. Three types of fruit are used such as fresh, dried from tree, and dried fruits purchased from local market. Pulp of fresh fruit was dried using sun, shade and oven at different temperatures and stored under different conditions for three months. Samples were analysed before and after drying and storage. The results showed significantly (p < 0.01) higher dry matter (98.73 g/100g), pH (7.09), tannins (27.64 mg/g), flavonoids (19.90 mg/g) and total polyphenols (7.13 mg/g) contents in pericarp than other parts of fruit. The pulp without pericarp exhibited higher ash, amino acids, proteins and vitamin C contents, however pulp of whole fresh fruit had higher Ca (1.67 mg/g), Na (640.26 mg/g) and Zn (11.63 μg/g). Pulp of fruit purchased from local market showed significantly stronger antioxidant activities (DPPH and ABTS). All parameters evaluated were significantly (p < 0.01) affected in comparison with pulp of fresh fruit but varied with respect to drying methods and storage conditions. The shade-dried samples showed higher proteins, amino acids, vitamin C, ash, fibres and acidity contents than other drying methods. Polyphenols and antioxidant activities are higher in oven-dried samples at low temperature (40 °C) as compared to others. The highest DPPH and ABTS scavenging activities are observed after drying and storage conditions for three months. Significant and positive (p < 0.01) correlations are found between antioxidant compounds and antioxidant activities. Thus, drying methods and storage conditions can preserve pulp of doum fruit with high physicochemical, bioactive compounds and antioxidant capacities for human well-being up to three months, however shade-drying followed by oven-drying are highly promising process that must be considered as suitable drying methods for doum fruits.
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Affiliation(s)
- M C Kolla
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 46, Maroua, Cameroon
| | - A Laya
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 46, Maroua, Cameroon.,Department of Life and Earth Sciences, Higher Teacher's Training College of Maroua, University of Maroua, P.O. Box 55, Maroua, Cameroon
| | - J P Bayang
- Department of Biological Sciences, Faculty of Science, University of Maroua, P.O. Box 46, Maroua, Cameroon
| | - B B Koubala
- Department of Chemistry, Faculty of Science, University of Maroua, P.O. Box 814, Maroua, Cameroon.,Department of Life and Earth Sciences, Higher Teacher's Training College of Maroua, University of Maroua, P.O. Box 55, Maroua, Cameroon
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Marinho TA, Oliveira MG, Menezes-Filho ACP, Castro CFS, Oliveira IMM, Borges LL, Melo-Reis PR, Silva-Jr NJ. Phytochemical characterization, and antioxidant and antibacterial activities of the hydroethanolic extract of Anadenanthera peregrina stem bark. BRAZ J BIOL 2021; 82:e234476. [PMID: 33681898 DOI: 10.1590/1519-6984.234476] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 07/03/2020] [Indexed: 02/05/2023] Open
Abstract
The Brazilian Cerrado biome consists of a great variety of endemic species with several bioactive compounds, and Anadenanthera peregrina (L.) Speg is a promising species. In this study, we aimed to perform phytochemical characterization and evaluate the antioxidant and antibacterial activities against Staphylococcus aureus and Escherichia coli of the hydroethanolic extract of A. peregrina stem bark. The barks were collected in the Botanical Garden of Goiânia, Brazil. The hydroethanolic extract was obtained by percolation and subjected to physicochemical screening, total phenolic content estimation, high-performance liquid chromatography (HPLC) fingerprinting, and antioxidant (IC50 values were calculated for the 2,2-diphenyl-1-picrylhydrazyl assay - DPPH) and antibacterial activity determination. The pH of the extract was 5.21 and density was 0.956 g/cm3. The phytochemical screening indicated the presence of cardiac glycosides, organic acids, reducing sugars, hemolytic saponins, phenols, coumarins, condensed tannins, flavonoids, catechins, depsides, and depsidones derived from benzoquinones. The extract showed intense hemolytic activity. The total phenolic content was 6.40 g GAE 100 g-1. The HPLC fingerprinting analysis revealed the presence of gallic acid, catechin, and epicatechin. We confirmed the antioxidant activity of the extract. Furthermore, the extract did not inhibit the growth of E. coli colonies at any volume tested, but there were halos around S. aureus colonies at all three volumes tested. These results contribute to a better understanding of the chemical composition of A. peregrina stem bark and further support the medicinal applications of this species.
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Affiliation(s)
- T A Marinho
- Universidade Federal de Goiás - UFG, Rede Pró Centro-Oeste, Programa de Pós-graduação em Biotenologia e Biodiversidade - PGBB, Goiânia, GO, Brasil.,Instituto Federal de Educação, Ciência e Tecnologia de Goiás - IFG, Núcleo de Estudos e Pesquisas em Promoção da Saúde - NUPPS, Goiânia, GO, Brasil
| | - M G Oliveira
- Universidade Federal de Goiás - UFG, Programa de Pós-graduação em Ciências Farmacêticas, Goiânia, GO, Brasil
| | - A C P Menezes-Filho
- Instituto Federal de Ciência e Tecnologia Goiano - IFGoiano, Programa de Pós-graduação em Agroquímica - PPGAq, Rio Verde, GO, Brasil
| | - C F S Castro
- Instituto Federal de Ciência e Tecnologia Goiano - IFGoiano, Programa de Pós-graduação em Agroquímica - PPGAq, Rio Verde, GO, Brasil
| | - I M M Oliveira
- Pontifícia Universidade Católica de Goiás - PUCGO, Programa de Pós-graduação em Genética, Goiânia, GO, Brasil
| | - L L Borges
- Universidade Estadual de Goiás - UEG, Programa de Pós-graduação em Recursos Naturais do Cerrado - RENAC, Anápolis, GO, Brasil
| | - P R Melo-Reis
- Pontifícia Universidade Católica de Goiás - PUCGO, Programa de Pós-graduação em Ciências Ambientas e Saúde, Goiânia, GO, Brasil
| | - N J Silva-Jr
- Pontifícia Universidade Católica de Goiás - PUCGO, Programa de Pós-graduação em Ciências Ambientas e Saúde, Goiânia, GO, Brasil
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Kumari P, Ujala, Bhargava B. Phytochemicals from edible flowers: Opening a new arena for healthy lifestyle. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104375] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Janarny G, Gunathilake KDPP, Ranaweera KKDS. Nutraceutical potential of dietary phytochemicals in edible flowers-A review. J Food Biochem 2021; 45:e13642. [PMID: 33533514 DOI: 10.1111/jfbc.13642] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 01/01/2021] [Accepted: 01/20/2021] [Indexed: 12/15/2022]
Abstract
Edible flowers have been in traditional cuisine and phytotherapy for centuries. Recently, the consumption of edible flowers has increased significantly as the phytochemicals in them are known to have numerous health benefits. Information on nutraceutical potentials and health benefits of the phytochemicals available in different varieties of edible flowers and their uses are discussed. It is found that the major groups of dietary phytochemicals in edible flowers include flavonoids, phenolic acids, and anthocyanins and they are capable of exerting antioxidant, anti-inflammatory, anti-diabetic, anticancer, cardioprotective, hepatoprotective gastroprotective, and genoprotective effects. PRACTICAL APPLICATIONS: Edible flowers are good sources of phytochemicals and possessing antioxidant, anti-inflammatory properties, anticancer, anti-diabetic, and cardio-protective properties. However, many edible flowers remain unexplored and underutilized. This review gives eye openings that more in-depth investigations need to be conducted on different edible flowers and they need to be incorporated into commercialized foods and drugs or need to be used for novel nutraceutical development to deliver the potential health benefits to consumers.
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Affiliation(s)
- Ganesamoorthy Janarny
- Department of Food Science and Technology, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
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A novel infrared pulse-spouted freeze drying on the drying kinetics, energy consumption and quality of edible rose flowers. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110318] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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15
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Quantitative and Qualitative Identification of Bioactive Compounds in Edible Flowers of Black and Bristly Locust and Their Antioxidant Activity. Biomolecules 2020; 10:biom10121603. [PMID: 33256210 PMCID: PMC7760478 DOI: 10.3390/biom10121603] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 11/30/2022] Open
Abstract
Black and bristly locust flowers are an excellent source of polyphenols, including flavonols, phenolic acids, and anthocyanins. In the present literature, there is a lack of studies showing the quantity and quality of phenolic compounds from different locust flowers. There are a few studies on the status of polyphenols in black locust flowers and their products but not bristly locusts. The aims of this study were to analyze and compare the concentrations of bioactive compounds from Robinia pseudoacacia and Robinia hispida flowers over two years. These two species of plants from six independent locations (parks and green areas) located in Warsaw were assessed in this study. The dry matter and polyphenol contents of the flowers were determined. Black locust flower samples contained significantly more myricetin and luteolin. Only bristly locust flowers contained anthocyanins. Five individual anthocyanins were identified in the pink-colored bristly locust flowers. Pelargonidin-3-O-glucoside and cyanidin-3-O-glucoside were the predominant forms in the pool of total anthocyanins.
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Fernandes L, Casal S, Pereira JA, Pereira EL, Saraiva JA, Ramalhosa E. Freezing of edible flowers: Effect on microbial and antioxidant quality during storage. J Food Sci 2020; 85:1151-1159. [PMID: 32157694 DOI: 10.1111/1750-3841.15097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/29/2020] [Accepted: 02/01/2020] [Indexed: 11/27/2022]
Abstract
Edible flowers are a new gourmet product; however, they are not always available all years. Thus, it is essential to find out technologies to guarantee this product for a longer time. Flowers of four species (borage [Borago officinalis], heartsease [Viola tricolor], kalanchoe [Kalanchoe blossfeldiana], and dandelion [Taraxacum officinale]) were subjected to freezing (in their natural form and in ice cubes) and analyzed in terms of visual appearance, the content of flavonoids, hydrolysable tannins, phenolics, antioxidant activity (2,2-diphenyl-1-picrylhydrazyl radical scavenging activity and reducing power), and microbial quality after storage for 1 and 3 months. Flowers in ice cubes showed similar appearance to fresh ones during the 3 months of storage, whereas frozen flowers were only equivalent up to 1 month with the exception of kalanchoe. Even though flowers in ice cubes showed good appearance after 3 months of storage, they had the lowest values of bioactive compounds and antioxidant activity. On the contrary, when frozen, the content of bioactive compounds maintained or even increased up to 1 month of storage compared to fresh flowers, except for borage. Furthermore, in both freezing treatments, the microorganisms' counts decreased or maintained when compared to fresh samples, except in dandelion. In general, both treatments may allow keeping the flowers after their flowering times. PRACTICAL APPLICATION: The market of edible flowers is increasing, although they are a very perishable product with short shelf-life. Edible flowers are stored in the cold (frozen or in ice cubes); however, the effect on the bioactive compounds and microbial quality that this treatment may have on borage (Borago officinalis), heartsease (Viola tricolor), kalanchoe (Kalanchoe blossfeldiana), and dandelion (Taraxacum officinale) flowers is unknown. So, the present study was conducted to increase the knowledge about the changes that freezing treatments may have in different edible flowers. The results of the present study underline that each flower has different behavior at frozen and ice cubes storage. However, freezing flowers maintain/increase the contents of bioactive compounds, while ice cubes not. Both treatments are effective in protecting flowers from microorganism growth. So, suggesting that both freezing treatments can be used as a preservative method and may allow keeping the flowers after their flowering times.
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Affiliation(s)
- Luana Fernandes
- CIMO/School of Agriculture, Polytechnic Institute of Bragança, Campus de Stª Apolónia, Bragança, 5300-253, Portugal.,LAQV@REQUIMTE/Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, Porto University, Rua Jorge Viterbo Ferreira, 228, Porto, 4050-313, Portugal.,LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
| | - Susana Casal
- LAQV@REQUIMTE/Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, Porto University, Rua Jorge Viterbo Ferreira, 228, Porto, 4050-313, Portugal
| | - José Alberto Pereira
- CIMO/School of Agriculture, Polytechnic Institute of Bragança, Campus de Stª Apolónia, Bragança, 5300-253, Portugal
| | - Ermelinda Lopes Pereira
- CIMO/School of Agriculture, Polytechnic Institute of Bragança, Campus de Stª Apolónia, Bragança, 5300-253, Portugal
| | - Jorge A Saraiva
- Organic Chemistry, Natural Products and Agrifood (QOPNA) & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, Aveiro, 3810-193, Portugal
| | - Elsa Ramalhosa
- CIMO/School of Agriculture, Polytechnic Institute of Bragança, Campus de Stª Apolónia, Bragança, 5300-253, Portugal
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