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Tsantila EM, Esslinger N, Christou M, Papageorgis P, Neophytou CM. Antioxidant and Anticancer Activity of Vitis vinifera Extracts in Breast Cell Lines. Life (Basel) 2024; 14:228. [PMID: 38398737 PMCID: PMC10890198 DOI: 10.3390/life14020228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/04/2024] [Accepted: 02/04/2024] [Indexed: 02/25/2024] Open
Abstract
Vitis vinifera extracts have been shown to possess antioxidant activity because of their polyphenol content. In addition, their therapeutic potential against several diseases, including cancer, has been reported. In this study, we produced twelve extracts from the seeds, fruit, leaves, and wood of the Vitis vinifera Airen variety using different extraction methodologies and measured their total polyphenol content (TPC). We also determined their antioxidant and antiproliferative effects against normal cells and evaluated the most potent extract against a panel of breast cancer cell lines. We found that the extracts produced by the seeds of Vitis vinifera had a higher TPC compared to the other parts of the plant. Most extracts produced from seeds had antioxidant activity and did not show cytotoxicity against normal breast cells. The extract produced from whole organic seeds of white grape showed the best correlation between the dose and the ROS inhibition at all time points compared to the other seed extracts and also had antiproliferative properties in estrogen-receptor-positive MCF-7 breast cancer cells. Its mechanism of action involves inhibition of proteins Bcl-2, Bcl-xL, and survivin, and induction of apoptosis. Further investigation of the constituents and activity of Vitis vinifera extracts may reveal potential pharmacological applications of this plant.
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Affiliation(s)
- Evgenia Maria Tsantila
- Apoptosis and Cancer Chemoresistance Laboratory, Basic and Translational Cancer Research Center, Department of Life Sciences, European University Cyprus, Nicosia 2404, Cyprus;
| | - Nils Esslinger
- Department of Research and Development, Alpinamed AG, 9306 Freidorf, Switzerland;
| | - Maria Christou
- Tumor Microenvironment, Metastasis and Experimental Therapeutics Laboratory, Basic and Translational Cancer Research Center, Department of Life Sciences, European University Cyprus, Nicosia 2404, Cyprus; (M.C.); (P.P.)
| | - Panagiotis Papageorgis
- Tumor Microenvironment, Metastasis and Experimental Therapeutics Laboratory, Basic and Translational Cancer Research Center, Department of Life Sciences, European University Cyprus, Nicosia 2404, Cyprus; (M.C.); (P.P.)
| | - Christiana M. Neophytou
- Apoptosis and Cancer Chemoresistance Laboratory, Basic and Translational Cancer Research Center, Department of Life Sciences, European University Cyprus, Nicosia 2404, Cyprus;
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Shahrajabian MH, Sun W. Carob ( Ceratonia siliqua L.), Pharmacological and Phytochemical Activities of Neglected Legume of the Mediterranean Basin, as Functional Food. Rev Recent Clin Trials 2024; 19:127-142. [PMID: 38288801 DOI: 10.2174/0115748871278128240109074506] [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: 09/07/2023] [Revised: 12/02/2023] [Accepted: 12/11/2023] [Indexed: 06/25/2024]
Abstract
Carob (Ceratonia siliqua L.) has been widely cultivated in different parts of the world, particularly in the Mediterranean region, and the tree belongs to the family Leguminosae. Several studies have indicated that carobs and their products can improve human health and help prevent different specific chronic diseases. Carob can considered as functional food due to its high content in dietary fibers, low-fat content, and high content of minerals. Its fruit is a pod containing 10%-20% seeds, and the pods consist of sugars, proteins, crude fibers, minerals, vitamins, polyphenols, vitamins, and lipids. In many countries in the Middle east, carob is mainly used to prepare as a traditional drink and some kinds of confectioneries. The powders can be utilized to prepare carob juice concentrate. The systematic review of documents from clinical trials and scientific societies dedicated to traditional medicine in China has been carried out. The goal of this review article is a survey of chemical compounds, and pharmaceutical benefits of carob, especially by considering traditional medicinal sciences. Moreover, clinical trials research promotes studies to highlight and focus on the scope of application of traditional medicinal science in the growing system of medicine.
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Affiliation(s)
- Mohamad Hesam Shahrajabian
- National Key Laboratory of Agricultural Microbiology, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wenli Sun
- National Key Laboratory of Agricultural Microbiology, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
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3
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Dahmani W, Elaouni N, Abousalim A, Akissi ZLE, Legssyer A, Ziyyat A, Sahpaz S. Exploring Carob ( Ceratonia siliqua L.): A Comprehensive Assessment of Its Characteristics, Ethnomedicinal Uses, Phytochemical Aspects, and Pharmacological Activities. PLANTS (BASEL, SWITZERLAND) 2023; 12:3303. [PMID: 37765467 PMCID: PMC10537686 DOI: 10.3390/plants12183303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/06/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023]
Abstract
The carob tree (Ceratonia siliqua L.) is currently considered one of the most valuable fruit and forest trees in various fields and sectors of activity. It is a versatile plant, belonging to the Fabaceae family. It is widely used in traditional medicine to treat many diseases such as diabetes, hypertension, and gastrointestinal disorders, given that all its parts (leaves, flowers, pods, seeds, wood, bark, and roots) are useful and hold value in many areas. Its importance has increased significantly in recent years. Originating from the Middle East, it is recognized for its ecological and industrial significance. Previous studies conducted on Ceratonia siliqua L. have revealed the presence of several compounds, including polyphenols, flavonoids, carbohydrates, minerals, and proteins. The carob tree demonstrates antihypertensive, antidepressant, anti-obesity, and antihyperglycemic activities. This plant is known for its medicinal and therapeutic virtues. Moreover, it is particularly interesting to consider the pharmacological activities of the major phytochemical compounds present in the different extracts of this plant, such as phenolic acids, for example, coumaric and gallic acids, as well as flavonoids such as kaempferol and quercetin. Therefore, this review aims to analyze some aspects of this plant, especially the taxonomy, cytogeography, traditional uses, phytochemical constituents, and pharmacological activities of Ceratonia siliqua L., in addition to its biological properties.
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Affiliation(s)
- Widad Dahmani
- Laboratory of Bioresources, Biotechnologies, Ethnopharmacology and Health, Department of Biology, Faculty of Sciences, University Mohammed First, Oujda 60000, Morocco; (W.D.); (N.E.); (A.L.); (A.Z.)
| | - Nabia Elaouni
- Laboratory of Bioresources, Biotechnologies, Ethnopharmacology and Health, Department of Biology, Faculty of Sciences, University Mohammed First, Oujda 60000, Morocco; (W.D.); (N.E.); (A.L.); (A.Z.)
| | - Abdelhadi Abousalim
- Plant Tissue Culture Laboratory, Horticultural and Local Products Unit, Plant Production, Protection and Biotechnology Department, Hassan II Institute of Agronomy and Veterinary Medicine, 6202 Rabat-Instituts, Rabat 10112, Morocco;
| | - Zachée Louis Evariste Akissi
- Joint Research Unit 1158 BioEcoAgro INRAE, University of Lille, University of Liège, UPJV, JUNIA, University of Artois, ULCO, 5900 Lille, France;
| | - Abdelkhaleq Legssyer
- Laboratory of Bioresources, Biotechnologies, Ethnopharmacology and Health, Department of Biology, Faculty of Sciences, University Mohammed First, Oujda 60000, Morocco; (W.D.); (N.E.); (A.L.); (A.Z.)
| | - Abderrahim Ziyyat
- Laboratory of Bioresources, Biotechnologies, Ethnopharmacology and Health, Department of Biology, Faculty of Sciences, University Mohammed First, Oujda 60000, Morocco; (W.D.); (N.E.); (A.L.); (A.Z.)
| | - Sevser Sahpaz
- Joint Research Unit 1158 BioEcoAgro INRAE, University of Lille, University of Liège, UPJV, JUNIA, University of Artois, ULCO, 5900 Lille, France;
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Kavvoura DA, Stefanakis MK, Kletsas D, Katerinopoulos HE, Pratsinis H. Biological Activities of Ceratonia siliqua Pod and Seed Extracts: A Comparative Analysis of Two Cretan Cultivars. Int J Mol Sci 2023; 24:12104. [PMID: 37569477 PMCID: PMC10418674 DOI: 10.3390/ijms241512104] [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: 06/30/2023] [Revised: 07/07/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
Ceratonia siliqua L., commonly known as the carob tree, appears in most Mediterranean countries, often cultivated for the collection of its fruits to be used as food for humans and animals. This study was aimed at the phytochemical characterization of two common Cretan C. siliqua cultivars and the biological evaluation of deseeded pod and seed extracts regarding their putative use in cosmetics. Gas and liquid chromatographic techniques were used to assess their essential oil, fatty acid, and carbohydrate profiles. Cell-free assays, including free-radical scavenging; the inhibition of tyrosinase and collagenase; the blocking of advanced glycation end product (AGE) formation; along with assays in human skin fibroblast cultures, i.e., reactive oxygen species suppression, glutathione stimulation, and protection from oxidative stress and from ultraviolet (UVB) radiation, were also used. Extracts from both cultivars were found to possess antioxidant capacity, tyrosinase- and collagenase-inhibitory activities, an ability to block glucose-induced AGEs, and in certain cases, UVB absorbance and photoprotective activities. Seed extracts were in general more active, while the use of 30% aqueous methanol seemed to be more efficient than n-hexane for extraction. Serial partition of the most active extracts resulted in fractions with enriched biological activities. These properties make Cretan carob extracts and their fractions suitable candidates for use in cosmetics.
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Affiliation(s)
- Dafni-Alexandra Kavvoura
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, NCSR “Demokritos”, 15341 Athens, Greece; (D.-A.K.); (D.K.)
| | - Michalis K. Stefanakis
- Laboratory of Organic Chemistry, Department of Chemistry, University of Crete, 70013 Heraklion, Greece; (M.K.S.); (H.E.K.)
| | - Dimitris Kletsas
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, NCSR “Demokritos”, 15341 Athens, Greece; (D.-A.K.); (D.K.)
| | - Haralambos E. Katerinopoulos
- Laboratory of Organic Chemistry, Department of Chemistry, University of Crete, 70013 Heraklion, Greece; (M.K.S.); (H.E.K.)
| | - Harris Pratsinis
- Laboratory of Cell Proliferation and Ageing, Institute of Biosciences and Applications, NCSR “Demokritos”, 15341 Athens, Greece; (D.-A.K.); (D.K.)
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Elbouzidi A, Taibi M, Ouassou H, Ouahhoud S, Ou-Yahia D, Loukili EH, Aherkou M, Mansouri F, Bencheikh N, Laaraj S, Bellaouchi R, Saalaoui E, Elfazazi K, Berrichi A, Abid M, Addi M. Exploring the Multi-Faceted Potential of Carob ( Ceratonia siliqua var. Rahma) Leaves from Morocco: A Comprehensive Analysis of Polyphenols Profile, Antimicrobial Activity, Cytotoxicity against Breast Cancer Cell Lines, and Genotoxicity. Pharmaceuticals (Basel) 2023; 16:840. [PMID: 37375787 DOI: 10.3390/ph16060840] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
The botanical species Ceratonia siliqua L., commonly referred to as the Carob tree, and locally as "L'Kharrûb", holds significance as an agro-sylvo-pastoral species, and is traditionally utilized in Morocco for treating a variety of ailments. This current investigation aims to ascertain the antioxidant, antimicrobial, and cytotoxic properties of the ethanolic extract of C. siliqua leaves (CSEE). Initially, we analyzed the chemical composition of CSEE through high-performance liquid chromatography with Diode-Array Detection (HPLC-DAD). Subsequently, we conducted various assessments, including DPPH scavenging capacity, β-carotene bleaching assay, ABTS scavenging, and total antioxidant capacity assays to evaluate the antioxidant activity of the extract. In this study, we investigated the antimicrobial properties of CSEE against five bacterial strains (two gram-positive, Staphylococcus aureus, and Enterococcus faecalis; and three gram-negative bacteria, Escherichia coli, Escherichia vekanda, and Pseudomonas aeruginosa) and two fungi (Candida albicans, and Geotrichum candidum). Additionally, we evaluated the cytotoxicity of CSEE on three human breast cancer cell lines (MCF-7, MDA-MB-231, and MDA-MB-436) and assessed the potential genotoxicity of the extract using the comet assay. Through HPLC-DAD analysis, we determined that phenolic acids and flavonoids were the primary constituents of the CSEE extract. The results of the DPPH test indicated a potent scavenging capacity of the extract with an IC50 of 302.78 ± 7.55 µg/mL, which was comparable to that of ascorbic acid with an IC50 of 260.24 ± 6.45 µg/mL. Similarly, the β-carotene test demonstrated an IC50 of 352.06 ± 12.16 µg/mL, signifying the extract's potential to inhibit oxidative damage. The ABTS assay revealed IC50 values of 48.13 ± 3.66 TE µmol/mL, indicating a strong ability of CSEE to scavenge ABTS radicals, and the TAC assay demonstrated an IC50 value of 165 ± 7.66 µg AAE/mg. The results suggest that the CSEE extract had potent antioxidant activity. Regarding its antimicrobial activity, the CSEE extract was effective against all five tested bacterial strains, indicating its broad-spectrum antibacterial properties. However, it only showed moderate activity against the two tested fungal strains, suggesting it may not be as effective against fungi. The CSEE exhibited a noteworthy dose-dependent inhibitory activity against all the tested tumor cell lines in vitro. The extract did not induce DNA damage at the concentrations of 6.25, 12.5, 25, and 50 µg/mL, as assessed by the comet assay. However, the 100 µg/mL concentration of CSEE resulted in a significant genotoxic effect compared to the negative control. A computational analysis was conducted to determine the physicochemical and pharmacokinetic characteristics of the constituent molecules present in the extract. The Prediction of Activity Spectra of Substances (PASS) test was employed to forecast the potential biological activities of these molecules. Additionally, the toxicity of the molecules was evaluated using the Protox II webserver.
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Affiliation(s)
- Amine Elbouzidi
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
| | - Mohamed Taibi
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
- Centre de l'Oriental des Sciences et Technologies de l'Eau et de l'Environnement (COSTEE), Université Mohammed Premier, Oujda 60000, Morocco
| | - Hayat Ouassou
- Higher Institute of Nursing Professions and Health Techniques, Oujda 60000, Morocco
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, Oujda 60000, Morocco
| | - Sabir Ouahhoud
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, Oujda 60000, Morocco
| | - Douâae Ou-Yahia
- Centre de l'Oriental des Sciences et Technologies de l'Eau et de l'Environnement (COSTEE), Université Mohammed Premier, Oujda 60000, Morocco
| | - El Hassania Loukili
- Centre de l'Oriental des Sciences et Technologies de l'Eau et de l'Environnement (COSTEE), Université Mohammed Premier, Oujda 60000, Morocco
| | - Marouane Aherkou
- Biotechnology Laboratory (MedBiotech), Bioinova Research Center, Rabat Medical and Pharmacy School, Mohammed Vth University, N.U, Rabat B.P 8007, Morocco
- Centre Mohammed VI For Research and Innovation (CM6), Madinat Al Irfane, Rabat B.P 6212, Morocco
| | - Farid Mansouri
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
| | - Noureddine Bencheikh
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, Oujda 60000, Morocco
| | - Salah Laaraj
- Regional Center of Agricultural Research of Tadla, National Institute of Agricultural Research (INRA), Avenue Ennasr, Rabat Principal, Rabat 10090, Morocco
| | - Reda Bellaouchi
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, Oujda 60000, Morocco
| | - Ennouamane Saalaoui
- Laboratory of Bioresources, Biotechnology, Ethnopharmacology and Health, Faculty of Sciences, Mohammed First University, Boulevard Mohamed VI, Oujda 60000, Morocco
| | - Kaoutar Elfazazi
- Regional Center of Agricultural Research of Tadla, National Institute of Agricultural Research (INRA), Avenue Ennasr, Rabat Principal, Rabat 10090, Morocco
| | - Abdelbasset Berrichi
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
| | - Malika Abid
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
| | - Mohamed Addi
- Laboratoire d'Amélioration des Productions Agricoles, Biotechnologie et Environnement (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda 60000, Morocco
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Deda O, Begou O, Gika H, Theodoridis G, Agapiou A. Optimization of Carob Products Preparation for Targeted LC-MS/MS Metabolomics Analysis. Metabolites 2023; 13:metabo13050645. [PMID: 37233685 DOI: 10.3390/metabo13050645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/24/2023] [Accepted: 05/04/2023] [Indexed: 05/27/2023] Open
Abstract
Carob (Ceratonia siliqua) is an exceptional source of significant bioactive compounds with great economic importance in the Mediterranean region, where it is widely cultivated. Carob fruit is used for the production of a variety of products and commodities such as powder, syrup, coffee, flour, cakes, and beverages. There is growing evidence of the beneficial effects of carob and the products made from it on a range of health problems. Therefore, metabolomics could be used to explore the nutrient-rich compounds of carob. Sample preparation is a crucial step in metabolomics-based analysis and has a great impact on the quality of the data obtained. Herein, sample preparation of carob syrup and powder was optimized, to enable highly efficient metabolomics-based HILIC-MS/MS analysis. Pooled powder and syrup samples were extracted under different conditions by adjusting pH, solvent type, and sample weight to solvent volume ratio (Wc/Vs). The metabolomics profiles obtained were evaluated using the established criteria of total area and number of maxima. It was observed that the Wc/Vs ratio of 1:2 resulted in the highest number of metabolites, regardless of solvent type or pH. Aqueous acetonitrile with a Wc/Vs ratio of 1:2 satisfied all established criteria for both carob syrup and powder samples. However, when the pH was adjusted, basic aqueous propanol 1:2 Wc/Vs and acidic aqueous acetonitrile 1:2 Wc/Vs provided the best results for syrup and powder, respectively. We strongly believe that the current study could support the standardization of the metabolomics sample preparation process to enable more efficient LC-MS/MS carob analysis.
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Affiliation(s)
- Olga Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Biomic Auth, Bioanalysis and Omics Laboratory, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, Innovation Area of Thessaloniki, 57001 Thermi, Greece
| | - Olga Begou
- Biomic Auth, Bioanalysis and Omics Laboratory, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, Innovation Area of Thessaloniki, 57001 Thermi, Greece
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Biomic Auth, Bioanalysis and Omics Laboratory, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, Innovation Area of Thessaloniki, 57001 Thermi, Greece
| | - Georgios Theodoridis
- Biomic Auth, Bioanalysis and Omics Laboratory, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, Innovation Area of Thessaloniki, 57001 Thermi, Greece
- Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Agapios Agapiou
- Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
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Ünal E, Sulukan E, Şenol O, Baran A, Nadaroğlu H, Kankaynar M, Kızıltan T, Ceyhun SB. Antioxidant/protective effects of carob pod (Ceratonia siliqua L.) water extract against deltamethrin-induced oxidative stress/toxicity in zebrafish larvae. Comp Biochem Physiol C Toxicol Pharmacol 2023; 267:109584. [PMID: 36822298 DOI: 10.1016/j.cbpc.2023.109584] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023]
Abstract
In our study, the antioxidant capacity of carob pods water extract (CPWE) against deltamethrin (DM)-induced oxidative stress, a widely used pesticide around the world, was investigated in vitro and in vivo in a zebrafish model. The in vitro antioxidant capacity of the obtained extract was evaluated with different methods using trolox, BHA and BHT standard antioxidants. For in vivo experiments, 4hpf zebrafish embryos were exposed to 10 ppb and 25 ppb DM for 120 h and the larvae were treated with 1-10 and 100 ppm CPWE for 4 h at 72th hours. According to the results obtained, it has been determined that the exposure of zebrafish to DM during the developmental period causes important body malformations, decrease in survival rate, reduction in eye size, shortening in body length and decrease in locomotor activity in the dark period. In addition, according to the results of whole-mount staining, it was determined that DM caused a significant increase in the amount of free oxygen radicals and apoptotic cells. It was also confirmed by metabolome analysis that CPWE application for 4 h reduced DM-induced toxicity and oxidative stress. As a result, it can be said that CPWE has an important antioxidant capacity in eliminating DM-induced oxidative stress.
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Affiliation(s)
- Elif Ünal
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Aquatic Biotechnology Laboratory, Fisheries Faculty, Atatürk University, Erzurum, Turkey
| | - Ekrem Sulukan
- Aquatic Biotechnology Laboratory, Fisheries Faculty, Atatürk University, Erzurum, Turkey; Department of Aquaculture Engineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Aquaculture Department, Fisheries Faculty, Atatürk University, Erzurum, Turkey
| | - Onur Şenol
- Department of Analytical Chemistry, Faculty of Pharmacy, Atatürk University, Erzurum, Turkey
| | - Alper Baran
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Aquatic Biotechnology Laboratory, Fisheries Faculty, Atatürk University, Erzurum, Turkey; Department of Food Quality Control and Analysis, Technical Vocational School, Atatürk University, Erzurum, Turkey
| | - Hayrunnisa Nadaroğlu
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Department of Food Quality Control and Analysis, Technical Vocational School, Atatürk University, Erzurum, Turkey
| | - Meryem Kankaynar
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Aquatic Biotechnology Laboratory, Fisheries Faculty, Atatürk University, Erzurum, Turkey
| | - Tuba Kızıltan
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Aquatic Biotechnology Laboratory, Fisheries Faculty, Atatürk University, Erzurum, Turkey
| | - Saltuk Buğrahan Ceyhun
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Aquatic Biotechnology Laboratory, Fisheries Faculty, Atatürk University, Erzurum, Turkey; Department of Aquaculture Engineering, Graduate School of Natural and Applied Science, Atatürk University, Erzurum, Turkey; Aquaculture Department, Fisheries Faculty, Atatürk University, Erzurum, Turkey.
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8
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Phenolic Profile, Antioxidant Activity, and Chemometric Classification of Carob Pulp and Products. Molecules 2023; 28:molecules28052269. [PMID: 36903513 PMCID: PMC10005499 DOI: 10.3390/molecules28052269] [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: 02/02/2023] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 03/05/2023] Open
Abstract
In recent years, carob and its derived products have gained wide attention due to their health-promoting effects, which are mainly attributed to their phenolic compounds. Carob samples (carob pulps, powders, and syrups) were analyzed to investigate their phenolic profile using high-performance liquid chromatography (HPLC), with gallic acid and rutin being the most abundant compounds. Moreover, the antioxidant capacity and total phenolic content of the samples were estimated through DPPH (IC50 98.83-488.47 mg extract/mL), FRAP (48.58-144.32 μmol TE/g product), and Folin-Ciocalteu (7.20-23.18 mg GAE/g product) spectrophotometric assays. The effect of thermal treatment and geographical origin of carobs and carob-derived products on their phenolic composition was assessed. Both factors significantly affect the concentrations of secondary metabolites and, therefore, samples' antioxidant activity (p-value < 10-7). The obtained results (antioxidant activity and phenolic profile) were evaluated via chemometrics, through a preliminary principal component analysis (PCA) and orthogonal partial least square-discriminant analysis (OPLS-DA). The OPLS-DA model performed satisfactorily, differentiating all samples according to their matrix. Our results indicate that polyphenols and antioxidant capacity can be chemical markers for the classification of carob and its derived products.
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Fuel M, Mesas C, Martínez R, Ortiz R, Quiñonero F, Bermúdez F, Gutiérrez N, Torres AM, Kapravelou G, Lozano A, Perazzoli G, Prados J, Porres JM, Melguizo C. Antioxidant and Chemopreventive Activity of Protein Hydrolysates from Raw and Germinated Flour of Legumes with Commercial Interest in Colorectal Cancer. Antioxidants (Basel) 2022; 11:antiox11122421. [PMID: 36552629 PMCID: PMC9774143 DOI: 10.3390/antiox11122421] [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: 09/22/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022] Open
Abstract
Legumes are a highly nutritious source of plant protein, fiber, minerals and vitamins. However, they also contain several bioactive compounds with significant potential benefits for human health. The objectives of this study were to evaluate the antioxidant, antitumor and chemopreventive activity of functional extracts from legumes using raw and germinated flours of six legume species of commercial interest. The methodology carried out consisted on the development of protein hydrolysates, assessment of their antioxidant capacity and in vitro tests on T84, HCT15 and SW480 colorectal cancer (CRC) cell lines. Our results showed a high antitumor activity of protein hydrolysate from M. sativa. Likewise, when combined with 5-Fluorouracile (5-Fu), there was a synergistic effect using extract concentrations from 50 to 175 µg/mL and 5-Fu concentrations from 1.5 to 5 µM. Similarly, the induction effect on detoxifying enzymes by the extracts of M. sativa, germinated V. faba Baraca × LVzt1 and V. narbonensis, which produced a higher induction rate than the positive control sulforaphane (10 µM), should be highlighted. Therefore, incorporating these enzymes into the diet could provide nutritional effects, as well as play an effective role in cancer chemoprevention and therapy.
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Affiliation(s)
- Marco Fuel
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
| | - Cristina Mesas
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto Biosanitario de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Rosario Martínez
- Cellbitec S.L., N.I.F. B04847216, Scientific Headquarters of the Almería Technology Park, Universidad de Almería, 04128 La Cañada, Spain
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), Universidad de Granada, 18100 Granada, Spain
| | - Raúl Ortiz
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto Biosanitario de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Francisco Quiñonero
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto Biosanitario de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Francisco Bermúdez
- Cellbitec S.L., N.I.F. B04847216, Scientific Headquarters of the Almería Technology Park, Universidad de Almería, 04128 La Cañada, Spain
| | - Natalia Gutiérrez
- IFAPA Centro Alameda del Obispo, Área de Genómica y Biotecnología, Apdo 3092, 14080 Córdoba, Spain
| | - Ana M. Torres
- IFAPA Centro Alameda del Obispo, Área de Genómica y Biotecnología, Apdo 3092, 14080 Córdoba, Spain
| | - Garyfallia Kapravelou
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), Universidad de Granada, 18100 Granada, Spain
| | - Aída Lozano
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), Universidad de Granada, 18100 Granada, Spain
| | - Gloria Perazzoli
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Instituto Biosanitario de Granada (ibs.GRANADA), 18014 Granada, Spain
| | - Jose Prados
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto Biosanitario de Granada (ibs.GRANADA), 18014 Granada, Spain
- Correspondence:
| | - Jesús M. Porres
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), Universidad de Granada, 18100 Granada, Spain
| | - Consolación Melguizo
- Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, 18100 Granada, Spain
- Department of Anatomy and Embryology, Faculty of Medicine, University of Granada, 18071 Granada, Spain
- Instituto Biosanitario de Granada (ibs.GRANADA), 18014 Granada, Spain
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10
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Locust Bean Gum, a Vegetable Hydrocolloid with Industrial and Biopharmaceutical Applications. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238265. [PMID: 36500357 PMCID: PMC9736161 DOI: 10.3390/molecules27238265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
Locust bean gum (LBG), a vegetable galactomannan extracted from carob tree seeds, is extensively used in the food industry as a thickening agent (E410). Its molecular conformation in aqueous solutions determines its solubility and rheological performance. LBG is an interesting polysaccharide also because of its synergistic behavior with other biopolymers (xanthan gum, carrageenan, etc.). In addition, this hydrocolloid is easily modified by derivatization or crosslinking. These LBG-related products, besides their applications in the food industry, can be used as encapsulation and drug delivery devices, packaging materials, batteries, and catalyst supports, among other biopharmaceutical and industrial uses. As the new derivatized or crosslinked polymers based on LBG are mainly biodegradable and non-toxic, the use of this polysaccharide (by itself or combined with other biopolymers) will contribute to generating greener products, considering the origin of raw materials used, the modification procedures selected and the final destination of the products.
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11
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Christodoulou MC, Orellana Palacios JC, Hesami G, Jafarzadeh S, Lorenzo JM, Domínguez R, Moreno A, Hadidi M. Spectrophotometric Methods for Measurement of Antioxidant Activity in Food and Pharmaceuticals. Antioxidants (Basel) 2022; 11:2213. [PMID: 36358583 PMCID: PMC9686769 DOI: 10.3390/antiox11112213] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/01/2022] [Accepted: 11/04/2022] [Indexed: 07/30/2023] Open
Abstract
In recent years, there has been a growing interest in the application of antioxidants in food and pharmaceuticals due to their association with beneficial health effects against numerous oxidative-related human diseases. The antioxidant potential can be measured by various assays with specific mechanisms of action, including hydrogen atom transfer, single electron transfer, and targeted scavenging activities. Understanding the chemistry of mechanisms, advantages, and limitations of the methods is critical for the proper selection of techniques for the valid assessment of antioxidant activity in specific samples or conditions. There are various analytical techniques available for determining the antioxidant activity of biological samples, including food and plant extracts. The different methods are categorized into three main groups, such as spectrometry, chromatography, and electrochemistry techniques. Among these assays, spectrophotometric methods are considered the most common analytical technique for the determination of the antioxidant potential due to their sensitivity, rapidness, low cost, and reproducibility. This review covers the mechanism of actions and color changes that occur in each method. Furthermore, the advantages and limitations of spectrophotometric methods are described and discussed in this review.
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Affiliation(s)
| | - Jose C. Orellana Palacios
- Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Golnaz Hesami
- Department of Food Science and Technology, Sanandaj Branch, Islamic Azad University, Pasdaran St., Sanandaj P.O. Box 618, Iran
| | - Shima Jafarzadeh
- School of Engineering, Edith Cowan University, Joondalup, WA 6027, Australia
| | - José M. Lorenzo
- Centro Tecnológico de la Carne de Galicia, Avd. Galicia N° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain
- Área de Tecnología de los Alimentos, Facultad de Ciencias de Ourense, Universidade de Vigo, 32004 Ourense, Spain
| | - Rubén Domínguez
- Centro Tecnológico de la Carne de Galicia, Avd. Galicia N° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain
| | - Andres Moreno
- Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Milad Hadidi
- Department of Organic Chemistry, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, 13071 Ciudad Real, Spain
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12
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Antonopoulou E, Panteli N, Feidantsis K, Mastoraki M, Koutsogeorgiou EI, Grivaki E, Papagrigoriou T, Christias SP, Chatzifotis S, Lazari D, Andreadis SS, Krigas N. Carob ( Ceratonia siliqua) as Functional Feed Is Beneficial in Yellow Mealworm ( Tenebrio molitor) Rearing: Evidence from Growth, Antioxidant Status and Cellular Responses. Antioxidants (Basel) 2022; 11:antiox11091840. [PMID: 36139915 PMCID: PMC9495811 DOI: 10.3390/antiox11091840] [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: 07/30/2022] [Revised: 09/11/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
In terms of sustainability and circular economy, agricultural by-products may be efficiently reused in insects’ rearing for high-quality protein sources in human diet and animal feeds. The present study aimed to explore whether the utilization of carob pods as feeding substrate may beneficially affect Tenebrio molitor’s growth, nutritional value, antioxidant status and cellular responses. Increasing levels of milled whole carob pods (0, 25, 50, 75, 100%) were used as alternative wheat bran (control) substrates for yellow mealworm rearing, while growth performance, proximate composition, total phenolic content, antioxidant enzyme activity and the expression of stress- and apoptotic-related proteins were evaluated in larvae. The results showed that carob pods’ content up to 75% did not significantly differentiate larvae weight, development time and total dry matter. Larvae total phenolic content and antioxidant activity exhibited a significant increase at 75% content. Although the antioxidant enzymes’ activity decreased at both 25 and 50% levels, higher carob content levels (75 and 100%) resulted in no significant changes compared to the control. Carob pods led to decreased apoptotic indicators and the low expression of most stress-related proteins compared to the control. The present findings demonstrate that carob pods and their antioxidant properties exert beneficial effects on T. molitor’s rearing and nutritional status, although 100% carob content may impact adversely the larvae due to the high amounts of carob tannins.
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Affiliation(s)
- Efthimia Antonopoulou
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence: (E.A.); or (N.K.); Tel.: +30-2310-998563 (E.A.); +30-2310-471110 (N.K.)
| | - Nikolas Panteli
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Kostantinos Feidantsis
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Maria Mastoraki
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Gournes Pediados, 71003 Heraklion, Greece
| | - Eleni I. Koutsogeorgiou
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization—Dimitra, 57001 Thermi, Greece
| | - Eirini Grivaki
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Theodora Papagrigoriou
- Laboratory of Pharmacognosy, Faculty of Pharmacy, School of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | | | - Stavros Chatzifotis
- Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Gournes Pediados, 71003 Heraklion, Greece
| | - Diamanto Lazari
- Laboratory of Pharmacognosy, Faculty of Pharmacy, School of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Stefanos S. Andreadis
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization—Dimitra, 57001 Thermi, Greece
| | - Nikos Krigas
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization—Dimitra, 57001 Thermi, Greece
- Correspondence: (E.A.); or (N.K.); Tel.: +30-2310-998563 (E.A.); +30-2310-471110 (N.K.)
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13
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Duksi F. Effects of various pre-sowing treatments on invitro seed germination of Ceratoniasiliqua L. RUDN JOURNAL OF AGRONOMY AND ANIMAL INDUSTRIES 2022. [DOI: 10.22363/2312-797x-2022-17-2-158-165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The organic dormancy of Ceratonia seeds is associated with their water resistance, which means that Carob suffers from difficulty in natural regeneration. Before planting Carob seeds must be treated in order to disturb mechanical dormancy. The main reasons for the decline in genus Ceratonia L. are anthropogenic impact on natural ecosystems, as well as the uses of Ceratonia for many goals. This problem is aggravated by the fact that seedlings of Ceratonia in nature are very rare because of organic dormancy, and the distribution of carob occurs mainly with the help of seeds. The aim of this work was to study the methods of pre-sowing treatment of dormant Carob seeds. This study was conducted on a wild Carob genotype grown in Syria. Four different pre-sowing treatments were the following: soaking in boiling distilled water (70 С) for 10 min; soaking in boiling distilled water (70 С) for 10 min + soaking in distilled water for 24 h; acid scarification with sulphuric acid (H2SO4); acid scarification with sulphuric acid (H2SO4) + soaking in distilled water for 24 h. We applied and examined for their effectiveness stimulation of Carob seed germination. The results showed that seeds treated with sulphuric acid (H2SO4) and then soaked in distilled water for 24 h was the most effective method increasing the germination percentage by 98 % compared to untreated seeds 5 %.
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14
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Usman M, Khan WR, Yousaf N, Akram S, Murtaza G, Kudus KA, Ditta A, Rosli Z, Rajpar MN, Nazre M. Exploring the Phytochemicals and Anti-Cancer Potential of the Members of Fabaceae Family: A Comprehensive Review. Molecules 2022; 27:molecules27123863. [PMID: 35744986 PMCID: PMC9230627 DOI: 10.3390/molecules27123863] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/05/2022] [Accepted: 06/09/2022] [Indexed: 02/06/2023] Open
Abstract
Cancer is the second-ranked disease and a cause of death for millions of people around the world despite many kinds of available treatments. Phytochemicals are considered a vital source of cancer-inhibiting drugs and utilize specific mechanisms including carcinogen inactivation, the induction of cell cycle arrest, anti-oxidant stress, apoptosis, and regulation of the immune system. Family Fabaceae is the second most diverse family in the plant kingdom, and species of the family are widely distributed across the world. The species of the Fabaceae family are rich in phytochemicals (flavonoids, lectins, saponins, alkaloids, carotenoids, and phenolic acids), which exhibit a variety of health benefits, especially anti-cancer properties; therefore, exploration of the phytochemicals present in various members of this family is crucial. These phytochemicals of the Fabaceae family have not been explored in a better way yet; therefore, this review is an effort to summarize all the possible information related to the phytochemical status of the Fabaceae family and their anti-cancer properties. Moreover, various research gaps have been identified with directions for future research.
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Affiliation(s)
- Muhammad Usman
- Department of Botany, Government College University Lahore, Katchery Road, Lahore 54000, Pakistan; (M.U.); (N.Y.)
| | - Waseem Razzaq Khan
- Institut Ekosains Borneo, Universiti Putra Malaysia Kampus Bintulu, Bintulu 97008, Malaysia;
| | - Nousheen Yousaf
- Department of Botany, Government College University Lahore, Katchery Road, Lahore 54000, Pakistan; (M.U.); (N.Y.)
| | - Seemab Akram
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Ghulam Murtaza
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
| | - Kamziah Abdul Kudus
- Department of Forestry Science and Biodiversity, Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Allah Ditta
- Department of Environmental Sciences, Shaheed Benazir Bhutto University Sheringal, Upper Dir 18000, Pakistan
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
- Correspondence: or (A.D.); (M.N.)
| | - Zamri Rosli
- Department of Forestry Science, Faculty of Agriculture and Forestry Sciences, Universiti Putra Malaysia Kampus Bintulu, Bintulu 97008, Malaysia;
| | - Muhammad Nawaz Rajpar
- Department of Forestry, Faculty of Life Sciences, SBBU Sheringal, Dir Upper 18000, Pakistan;
| | - Mohd Nazre
- Department of Forestry Science and Biodiversity, Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang 43400, Malaysia;
- Correspondence: or (A.D.); (M.N.)
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15
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Grigoriou AM, Pinakoulaki E. Linking the Dynamic Changes in the In Vitro Antioxidant Activity of Carob Kibbles upon Roasting to the Chemical and Structural Changes Revealed by FTIR Spectroscopy. Antioxidants (Basel) 2021; 10:2025. [PMID: 34943128 PMCID: PMC8698282 DOI: 10.3390/antiox10122025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
Abstract
Recent studies have highlighted the potential of utilizing carob kibbles as a bioactive-rich food ingredient associated with substantial health benefits. Roasting is a key process in enhancing the sensory characteristics of carob kibbles, also affecting the bioactive polyphenols and leading to the formation of Maillard reaction products (MRPs), including the polymeric melanoidins that are associated with a high antioxidant potential but remain unexplored in carob. In this work, we employed for the first time attenuated total reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy to probe the dynamic chemical and structural changes upon the roasting of carob kibbles, along with the investigation of the in vitro antioxidant activity through the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and the determination of the total polyphenolic, proanthocyanidin, gallic acid and cinnamic acid contents. Roasting significantly enhanced the in vitro antioxidant activity of the polyphenolic carob extracts, with different rates at distinct roasting temperatures. The ATR-FTIR analysis enabled the identification of the changes in the structural features of polyphenolic compounds that were related to the improved antioxidant activity upon roasting. Furthermore, the detection of characteristic signatures for the polymeric melanoidins in the infrared (IR) fingerprint region provided the first evidence for the formation and structural properties of these complex, diverse compounds in roasted carob kibbles.
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