Analysis of phytochemical composition and biological activities of Helichrysum pallasii (Sprengel) ledeb leaves
Yıl 2023,
Cilt: 10 Sayı: 1, 71 - 85, 26.03.2023
Nejmi Işık
Muzaffer Mükemre
,
Rabia Sena Türker
,
Gokhan Zengin
,
Abdullah Dalar
Öz
This study aimed at the investigation of in vitro biological activities (antioxidant and enzyme inhibition) and phytochemical composition of various extracts (ethanol maceration, aqueous infusion, and aqueous decoction) obtained from leaf organs of Helichrysum pallasii, which has been traditionally used as herbal tea and medicine in Eastern Anatolia.
Experimental analysis showed that ethanol-based extract had higher total phenolic content (TPC: 103 mg GAE/gE) and showed superior antioxidant potentials (FRAP: 2205 μmol Fe2+/gE; ORAC: 2540 μmol Trolox Eq./gE; DPPH: IC50=0.58 mg/ml; CUPRAC: IC50=0.37 mg/ml; Phosphomolybdenum: IC50=1.34 mg/ml ve metal chelation: IC50=1.42 mg/ml) and enzyme inhibition (Acetylcholinesterase: IC50=1.49 mg/ml; Butyrylcholinesterase: IC50=1.98 mg/ml; Tyrosinase: IC50=0.68 mg/ml; Alpha-amylase: IC50=2.09 mg/ml; Alpha-glucosidase: IC50=0.51 mg/ml; and Pancreatic lipase: IC50=42.5 μg/ml) and contained higher amounts of phenolic (chlorogenic acid isomers and rutin) and fatty acid (palmitic, linoleic, and linolenic acids) compounds than traditional preparations (infusion and decoction).
The current study's findings indicate that the leaves of the Helichrysum pallasii are a source of phytochemicals with strong antioxidant and enzyme inhibitory properties, implying that it could be a candidate for biotherapeutic agent research and development.
Kaynakça
- Ainsworth, E.A., & Gillespie, K.M. (2007). Estimation of total phenolic content and other oxidation substrates in plant tissues using Folin-Ciocalteu reagent. Nature Protocols, 2(4), 875-877.
- Albayrak, S., Sagdic, O., Aksoy, A., & Hamzaoglu, H. (2008). Antimicrobial and antioxidant activities of Helichrysum species from the Mediterranean region of Turkey. Asian Journal of Chemistry, 20, 3143–3152.
- Albayrak, S., Aksoy, A., Sagdic, O., & Hamzaoglu, E. (2010). Compositions, antioxidant and antimicrobial activities of Helichrysum (Asteraceae) species collected from Turkey. Food chemistry, 119(1), 114-122.
- Altundag, E., & Ozturk, M. (2011). Ethnomedicinal studies on the plant resources of east Anatolia, Turkey. Procedia - Social and Behavioral Sciences, 19, 756-777.
- Andries, A., Rozenski, J., Vermeersch, P., Mekahli, D., & Schepdael, A.V. (2020). Recent progress in the LC–MS/MS analysis of oxidative stress biomarkers. Electrophoresis, 42(4): 402-428.
- Bhagavan, N.V., & Ha Chung-Eun. (2015 ). Enzymes and Enzyme Regulation. Essentials of Medical Biochemistr, 63- 84.
- Baytop, T. (1999). Türkiye’de Bitkiler ile Tedavi. Nobel Tıb Kitabevleri, İstanbul, 480.
- Benzie, I.F.F., & Strain, J.J. (1996). The ferric reducing ability of plasma (FRAP) as a measure of "antioxidant power": the FRAP assay. Analytical Biochemistry, 239, 70-76.
- Bojilov, D.G., Manolov, S.P., Ivanov, I.I., & Mollova, S.L. (2019). Investigation of Antioxidant Activity of Different Extracts of Helichrysum italicum from Bulgaria. Journal of International Scientific Publications, 13, 41-249.
- Carini, M., Aldini, G., Furlanetto, S., Stefani, R., & Facino, R.M. (2001). LC coupled to ion-trap MS for the rapid screening and detection of polyphenol antioxidants from Helichrysum stoechas. Journal of Pharmaceutical and Biomedical Analysis, 24(3), 517–526.
- Cho, AS., Jeon, SM., Kim, MJ., Yeo, J., Seo, KI., Choi, MS., & Lee, MK. (2010). Chlorogenic acid exhibits anti-obesity property and improves lipid metabolism in high-fat diet-induced-obese mice. Food and Chemical Toxicology, 48(3), 937–943.
- Clifford, M.N., Jaganath, I.B., Ludwig, I.A., & Crozier, A. (2017). Chlorogenic acids and the acyl-quinic acids: Discovery, biosynthesis, bioavailability and bioactivity. Natural Product Reports, 34, 1391–1421.
- Dai, J., & Mumper, RJ. (2010). Plant phenolics: extraction, analysis and their antioxidant and anticancer properties. Molecules. 15, 7313-7352.
- Dalar, A., & Konczak, I. (2013). Phenolic contents, antioxidant capacities and inhibitory activities against key metabolic syndrome relevant enzymes of herbal teas from Eastern Anatolia. Industrial Crops and Products, 44, 383-390.
- Dalar, A., Türker, M., Zabaras, D., & Konczak, I. (2014). Phenolic composition, antioxidant and enzyme inhibitory activities of Eryngium bornmuelleri leaf. Plant foods for human nutrition (Dordrecht, Netherlands), 69(1), 30–36.
- Dalar, A., Mukemre, M., Unal, M., & Ozgokce, F. (2018). Traditional medicinal plants of Ağrı Province, Turkey. Journal of Ethnopharmacology, 226, 56-72.
- Dalar, A., & Mükemre, M. (2020). Traditional Medicinal Plants of Van Province, Eastern Anatolia. New York: NOVA Science Publishers Inc.
- Di Meo, S., Reed, T.T., Venditti, P., & Victor, V.M. (2016). Harmful and Beneficial Role of ROS. Oxidative Medicine and Cellular Longevity, 7909186.
- Exteberria, U., Garza, A. L., Campiόn, J., Martinez, J. A., & Milagro, F. I. (2012). Antidiabetic effects of natural plant extracts via inhibition of carbohydrate hydrolysis enzymes with emphasis on pancreatic alpha amylase. Expert opinion on therapeutic targets, 16(3), 269-297.
- Ghorbani, A. (2017). Mechanisms of antidiabetic effects of flavonoid rutin. Biomedecine & pharmacotherapie, 96, 305-312.
- Gonçalves, S., & Romano, A. (2017). Phenolic Compounds: Biological Activity. Soto-Hernandez, M., M. Palma-Tenango and M.D.R. GarciaMateos (Eds.). Rijeka, Croatia: InTech Publisher; Chapter 6, Inhibitory Properties of Phenolic Compounds Against Enzymes Linked with Human Diseases; p. 99-118.
- Gonçalves, S., Moreira, E., Grosso, C., Andrade, PB., Valentão, P., & Romano, A. (2017). Phenolic profile, antioxidant activity and enzyme inhibitory activities of extracts from aromatic plants used in Mediterranean diet. Journal of food science and technology, 54(1), 219–227.
- Hamed, Y.S., Abdin, M., Chen, G., Akhtar, H.M.S. & Zeng, X. (2020) Effects of impregnate temperature on extraction of caffeoylquinic acid derivatives from Moringa oleifera leaves and evaluation of inhibitory activity on digestive enzyme, antioxidant, anti-proliferative and antibacterial activities of the extract. International Journal of Food Science & Technology, 55, 3082–3090.
- Hu, B., Cui, F., Yin, F., Zeng, X., Sun, Y., & Li, Y. (2015). Caffeoylquinic acids competitively inhibit pancreatic lipase through binding to the catalytic triad. International journal of biological macromolecules, 80, 529–535.
- Jahromi, M.A.F., Dehshahri, S., & Samani, SF. (2017). Volatile Composition, Antimicrobial and free radical scavenging activities of essential oil and total extract of Helichrysum leucocephalum Boiss. Trends in Pharmaceutical Sciences, 3(3), 193-200.
- Jung, U.J., Lee, M.K., Park, Y.B., Jeon, S.M., & Choi, M.S. (2006). Antihyperglycemic and antioxidant properties of caffeic acid in db/db mice. The Journal of Pharmacology and Experimental Therapeutics, 318(2), 476–83.
- Kamalakkannan, N., & Prince, P. S. (2006). Antihyperglycaemic and antioxidant effect of rutin, a polyphenolic flavonoid, in streptozotocin-induced diabetic wistar rats. Basic & Clinical Pharmacology & Toxicology, 98(1), 97–103.
- Karthikesan, K., Pari, L., & Menon, V. P. (2010). Antihyperlipidemic effect of chlorogenic acid and tetrahydrocurcumin in rats subjected to diabetogenic agents. Chemico-Biological Interactions, 188(3), 643–650.
- Kim, K.B., Nam, Y.A., Kim, H.S., Hayes, A.W., & Lee, B.M. (2014). α-Linolenic acid: Nutraceutical, pharmacological and toxicological evaluation. Food and Chemical Toxicology, 70, 163–178.
- Kolaylı, S., Şahin, H., Ulusoy, E., Tarhan, Ö., 2010. Phenolic Composition and Antioxidant Capacities of Helichrysum plicatum. Hacettepe Journal Biology & Chemistry 38(4), 269-276.
- Les, F., Venditti, A., Cásedas, G., Frezza, C., Guiso, M., Sciubba, F., Serafini, M., Bianco, A., Valero, M.S., & López, V. (2017). Everlasting flower (Helichrysum stoechas Moench) as a potential source of bioactive molecules with antiproliferative, antioxidant, antidiabetic and neuroprotective properties. Industrial Crops and Products, 108, 295-302.
- Liang, N. & Kitts, D.D. (2016). Role of chlorogenic acids in controlling oxidative and inflammatory stress conditions. Nutrients, 8, 16.
- Martinez-Gonzalez, A.I., Diaz-Sanchez, A.G., de la Rosa, L.A., Vargas-Requena, C.L., Bustos-Jaimes, I., & Alvarez-Parrilla, E. (2017). Polyphenolic compounds and digestive enzymes: in vitro non-covalent interactions. Molecules, 22, 669.
- Matthews, D.G., Caruso, M., Alcazar Magana, A., Wright, K.M., Maier, C.S., Stevens, J.F., Gray, N.E., Quinn, J.F., & Soumyanath, A. (2020). Caffeoylquinic Acids in Centella asiatica Reverse Cognitive Deficits in Male 5XFAD Alzheimer's Disease Model Mice. Nutrients, 12(11), 3488.
- Mükemre, M., Behçet, L., & Çakılcıoglu, U. (2015). Ethnobotanical study on medicinal plants in villages of Çatak (Van-Turkey). Journal of Ethnopharmacology, 166, 361–374.
- Naczk, M., & Shahidi, F. (2006). Phenolics in cereals, fruits and vegetables: Occurrence, extraction and analysis. Journal of Pharmaceutical and Biomedical Analysis, 41, 1523-1542.
- Oboh, G., Agunloye, O.M., Adefegha, S.A., Akinyemi, A.J., & Ademiluyi, A.O. (2015). Caffeic and chlorogenic acids inhibit key enzymes linked to type 2 diabetes (in vitro): a comparative study. Journal of Basic and Clinical Physiology and Pharmacology, 26(2), 165–170.
- Olthof, M.R., Hollman, P.C., & Katan, M.B. (2001). Chlorogenic acid and caffeic acid are absorbed in humans. The Journal of Nutrition, 131(1), 66–71.
- Ong, K.W., Hsu, A., & Tan, B.K. (2012). Chlorogenic acid stimulates glucose transport in skeletal muscle via AMPK activation: a contributor to the beneficial effects of coffee on diabetes. PLoS One, 7(3).
- Orhan, N., Hosbas, S., Orhan, D.D., Aslan, M., & Ergun, F. (2016). Enzyme inhibitory and radical scavenging effects of some antidiabetic plants of Turkey. Iran Journal of Basic Medicinal Sciences, 17, 426-32.
- Ou, B., Hampsch-Woodill, M., & Prior, R.L. (2001). Development and validation of an improved oxygen radical absorbance capacity assay using fluorescein as the fluorescent probe. Journal of Agricultural and Food Chemistry, 49, 4619–26.
- Özkan, G., Sagdıç, O., & Özçelik, H. (2004). Some Turkish endemic herb extracts as antimicrobial and antioxidant agents. 4th International Conggress Environmental Micropaleontology, Microbiology and Meiobenthology; 13-18 September, 2004; Isparta, Turkey; p. 151-154.
- Patadiya, N., Panchal, N., & Vaghel, V. (2021). A Review on Enzyme Inhibitors. International Research Journal of Pharmacy,12(6):12.
- Piljac-Žegarac, J., Šamec, D., & Piljac, A (2013). Chapter 11 - Herbal Teas: A Focus on Antioxidant Properties, Editor(s): Victor R. Preedy, Tea in Health and Disease Prevention, Academic Press, 129-140.
- Pisoschi, A.M., Pop, A., Iordache, F., Stanca, L., Predoi, G., & Serban, A.I. (2021). Oxidative stress mitigation by antioxidants - An overview on their chemistry and influences on health status. European Journal of Medicinal Chemistry, 209, 112891.
- Shahi, S., Ahmadian, E., Fathi, N., Eftekhari, A., Khalilov, R., & Dizaj, S.M. (2019). Preparation and physicochemical assessment of rutin-loaded gelatin nanoparticles. Journal of Advanced Chemical and Pharmaceutical Materials (JACPM), 2(2), 138–142.
- Shen, X.J., Zhou, J.D., Dong, J.Y., Ding, W.Q., & Wu, J.C. (2012). Dietary intake of n-3 fatty acids and colorectal cancer risk: a meta-analysis of data from 489 000 individuals. The British Journal of Nutrition, 108(9), 1550–1556.
- Süzgeç, S., Meriçli, A.H., Houghton, P.J., & Çubukçu, B. (2005). Flavonoids of Helichrysum compactum and their antioxidant and antibacterial activity. Fitoterapia, 76(2), 269-272.
- Torres, A., Noriega, L.G., Delgadillo-Puga, C., Tovar, A.R., & Navarro-Ocaña, A. (2021). Caffeoylquinic Acid Derivatives of Purple Sweet Potato as Modulators of Mitochondrial Function in Mouse Primary Hepatocytes. Molecules, 26(2), 319.
- Uysal, S., Zengin, G., Locatelli, M., Bahadori, M.B., Mocan, A., Bellagamba, G., & Aktumsek, A. (2017). Cytotoxic and enzyme inhibitory potential of two Potentilla species (P. speciosa L. and P. reptans Willd.) and their chemical composition. Frontiers in Pharmacology, 23(8), 290.
- Uzun, Y., Dalar, A., & Konczak, I. (2017). Sempervivum davisii: phytochemical composition, antioxidant and lipase-inhibitory activities. Pharmaceutical Biology, 55, 532-540.
- Weiss, R., Bremer, A., & Lusting, R. (2013). What is metabolic syndrome, and why children getting it?. Annals of New York Academy of Science, 1281, 123-40.
- Yoshimoto, M., Yahara, S., Okuno, S., Islam, M. S., Ishiguro, K., & Yamakawa, O. (2002). Antimutagenicity of mono-, di-, and tricaffeoylquinic acid derivatives isolated from sweetpotato (Ipomoea batatas L.) leaf. Bioscience, Biotechnology, and Biochemistry, 66(11), 2336–2341.
- Zhang, B., Deng, Z., Ramdath, DD., Tang, Y., Chen, PX., Liu, R., Liu, Q., & Tsao, R. (2015). Phenolic profiles of 20 Canadian lentil cultivars and their contribution to antioxidant activity and inhibitory effects on α-glucosidase and pancreatic lipase. Food Chemistry, 172, 862-872.
- Zengin, G. (2016). A study on in vitro enzyme inhibitory properties of Asphodeline anatolica: new sources of natural inhibitors for public health problems. Industrial Crops and Products. 83, 39-43.
- Zengin, G., Cvetanović, A., Gašić, U., Tešić, Z., Stupar, A., Bulut, G., et al. (2020). A comparative exploration of the phytochemical profiles and bio-pharmaceutical potential of Helichrysum stoechas subsp. barrelieri extracts obtained via five extraction techniques. Process Biochemistry, 91, 113-125.
Analysis of phytochemical composition and biological activities of Helichrysum pallasii (Sprengel) ledeb leaves
Yıl 2023,
Cilt: 10 Sayı: 1, 71 - 85, 26.03.2023
Nejmi Işık
Muzaffer Mükemre
,
Rabia Sena Türker
,
Gokhan Zengin
,
Abdullah Dalar
Öz
This study aimed at the investigation of in vitro biological activities (antioxidant and enzyme inhibition) and phytochemical composition of various extracts (ethanol maceration, aqueous infusion, and aqueous decoction) obtained from leaf organs of Helichrysum pallasii, which has been traditionally used as herbal tea and medicine in Eastern Anatolia.
Experimental analysis showed that ethanol-based extract had higher total phenolic content (TPC: 103 mg GAE/gE) and showed superior antioxidant potentials (FRAP: 2205 μmol Fe2+/gE; ORAC: 2540 μmol Trolox Eq./gE; DPPH: IC50=0.58 mg/ml; CUPRAC: IC50=0.37 mg/ml; Phosphomolybdenum: IC50=1.34 mg/ml ve metal chelation: IC50=1.42 mg/ml) and enzyme inhibition (Acetylcholinesterase: IC50=1.49 mg/ml; Butyrylcholinesterase: IC50=1.98 mg/ml; Tyrosinase: IC50=0.68 mg/ml; Alpha-amylase: IC50=2.09 mg/ml; Alpha-glucosidase: IC50=0.51 mg/ml; and Pancreatic lipase: IC50=42.5 μg/ml) and contained higher amounts of phenolic (chlorogenic acid isomers and rutin) and fatty acid (palmitic, linoleic, and linolenic acids) compounds than traditional preparations (infusion and decoction).
The current study's findings indicate that the leaves of the Helichrysum pallasii are a source of phytochemicals with strong antioxidant and enzyme inhibitory properties, implying that it could be a candidate for biotherapeutic agent research and development.
Kaynakça
- Ainsworth, E.A., & Gillespie, K.M. (2007). Estimation of total phenolic content and other oxidation substrates in plant tissues using Folin-Ciocalteu reagent. Nature Protocols, 2(4), 875-877.
- Albayrak, S., Sagdic, O., Aksoy, A., & Hamzaoglu, H. (2008). Antimicrobial and antioxidant activities of Helichrysum species from the Mediterranean region of Turkey. Asian Journal of Chemistry, 20, 3143–3152.
- Albayrak, S., Aksoy, A., Sagdic, O., & Hamzaoglu, E. (2010). Compositions, antioxidant and antimicrobial activities of Helichrysum (Asteraceae) species collected from Turkey. Food chemistry, 119(1), 114-122.
- Altundag, E., & Ozturk, M. (2011). Ethnomedicinal studies on the plant resources of east Anatolia, Turkey. Procedia - Social and Behavioral Sciences, 19, 756-777.
- Andries, A., Rozenski, J., Vermeersch, P., Mekahli, D., & Schepdael, A.V. (2020). Recent progress in the LC–MS/MS analysis of oxidative stress biomarkers. Electrophoresis, 42(4): 402-428.
- Bhagavan, N.V., & Ha Chung-Eun. (2015 ). Enzymes and Enzyme Regulation. Essentials of Medical Biochemistr, 63- 84.
- Baytop, T. (1999). Türkiye’de Bitkiler ile Tedavi. Nobel Tıb Kitabevleri, İstanbul, 480.
- Benzie, I.F.F., & Strain, J.J. (1996). The ferric reducing ability of plasma (FRAP) as a measure of "antioxidant power": the FRAP assay. Analytical Biochemistry, 239, 70-76.
- Bojilov, D.G., Manolov, S.P., Ivanov, I.I., & Mollova, S.L. (2019). Investigation of Antioxidant Activity of Different Extracts of Helichrysum italicum from Bulgaria. Journal of International Scientific Publications, 13, 41-249.
- Carini, M., Aldini, G., Furlanetto, S., Stefani, R., & Facino, R.M. (2001). LC coupled to ion-trap MS for the rapid screening and detection of polyphenol antioxidants from Helichrysum stoechas. Journal of Pharmaceutical and Biomedical Analysis, 24(3), 517–526.
- Cho, AS., Jeon, SM., Kim, MJ., Yeo, J., Seo, KI., Choi, MS., & Lee, MK. (2010). Chlorogenic acid exhibits anti-obesity property and improves lipid metabolism in high-fat diet-induced-obese mice. Food and Chemical Toxicology, 48(3), 937–943.
- Clifford, M.N., Jaganath, I.B., Ludwig, I.A., & Crozier, A. (2017). Chlorogenic acids and the acyl-quinic acids: Discovery, biosynthesis, bioavailability and bioactivity. Natural Product Reports, 34, 1391–1421.
- Dai, J., & Mumper, RJ. (2010). Plant phenolics: extraction, analysis and their antioxidant and anticancer properties. Molecules. 15, 7313-7352.
- Dalar, A., & Konczak, I. (2013). Phenolic contents, antioxidant capacities and inhibitory activities against key metabolic syndrome relevant enzymes of herbal teas from Eastern Anatolia. Industrial Crops and Products, 44, 383-390.
- Dalar, A., Türker, M., Zabaras, D., & Konczak, I. (2014). Phenolic composition, antioxidant and enzyme inhibitory activities of Eryngium bornmuelleri leaf. Plant foods for human nutrition (Dordrecht, Netherlands), 69(1), 30–36.
- Dalar, A., Mukemre, M., Unal, M., & Ozgokce, F. (2018). Traditional medicinal plants of Ağrı Province, Turkey. Journal of Ethnopharmacology, 226, 56-72.
- Dalar, A., & Mükemre, M. (2020). Traditional Medicinal Plants of Van Province, Eastern Anatolia. New York: NOVA Science Publishers Inc.
- Di Meo, S., Reed, T.T., Venditti, P., & Victor, V.M. (2016). Harmful and Beneficial Role of ROS. Oxidative Medicine and Cellular Longevity, 7909186.
- Exteberria, U., Garza, A. L., Campiόn, J., Martinez, J. A., & Milagro, F. I. (2012). Antidiabetic effects of natural plant extracts via inhibition of carbohydrate hydrolysis enzymes with emphasis on pancreatic alpha amylase. Expert opinion on therapeutic targets, 16(3), 269-297.
- Ghorbani, A. (2017). Mechanisms of antidiabetic effects of flavonoid rutin. Biomedecine & pharmacotherapie, 96, 305-312.
- Gonçalves, S., & Romano, A. (2017). Phenolic Compounds: Biological Activity. Soto-Hernandez, M., M. Palma-Tenango and M.D.R. GarciaMateos (Eds.). Rijeka, Croatia: InTech Publisher; Chapter 6, Inhibitory Properties of Phenolic Compounds Against Enzymes Linked with Human Diseases; p. 99-118.
- Gonçalves, S., Moreira, E., Grosso, C., Andrade, PB., Valentão, P., & Romano, A. (2017). Phenolic profile, antioxidant activity and enzyme inhibitory activities of extracts from aromatic plants used in Mediterranean diet. Journal of food science and technology, 54(1), 219–227.
- Hamed, Y.S., Abdin, M., Chen, G., Akhtar, H.M.S. & Zeng, X. (2020) Effects of impregnate temperature on extraction of caffeoylquinic acid derivatives from Moringa oleifera leaves and evaluation of inhibitory activity on digestive enzyme, antioxidant, anti-proliferative and antibacterial activities of the extract. International Journal of Food Science & Technology, 55, 3082–3090.
- Hu, B., Cui, F., Yin, F., Zeng, X., Sun, Y., & Li, Y. (2015). Caffeoylquinic acids competitively inhibit pancreatic lipase through binding to the catalytic triad. International journal of biological macromolecules, 80, 529–535.
- Jahromi, M.A.F., Dehshahri, S., & Samani, SF. (2017). Volatile Composition, Antimicrobial and free radical scavenging activities of essential oil and total extract of Helichrysum leucocephalum Boiss. Trends in Pharmaceutical Sciences, 3(3), 193-200.
- Jung, U.J., Lee, M.K., Park, Y.B., Jeon, S.M., & Choi, M.S. (2006). Antihyperglycemic and antioxidant properties of caffeic acid in db/db mice. The Journal of Pharmacology and Experimental Therapeutics, 318(2), 476–83.
- Kamalakkannan, N., & Prince, P. S. (2006). Antihyperglycaemic and antioxidant effect of rutin, a polyphenolic flavonoid, in streptozotocin-induced diabetic wistar rats. Basic & Clinical Pharmacology & Toxicology, 98(1), 97–103.
- Karthikesan, K., Pari, L., & Menon, V. P. (2010). Antihyperlipidemic effect of chlorogenic acid and tetrahydrocurcumin in rats subjected to diabetogenic agents. Chemico-Biological Interactions, 188(3), 643–650.
- Kim, K.B., Nam, Y.A., Kim, H.S., Hayes, A.W., & Lee, B.M. (2014). α-Linolenic acid: Nutraceutical, pharmacological and toxicological evaluation. Food and Chemical Toxicology, 70, 163–178.
- Kolaylı, S., Şahin, H., Ulusoy, E., Tarhan, Ö., 2010. Phenolic Composition and Antioxidant Capacities of Helichrysum plicatum. Hacettepe Journal Biology & Chemistry 38(4), 269-276.
- Les, F., Venditti, A., Cásedas, G., Frezza, C., Guiso, M., Sciubba, F., Serafini, M., Bianco, A., Valero, M.S., & López, V. (2017). Everlasting flower (Helichrysum stoechas Moench) as a potential source of bioactive molecules with antiproliferative, antioxidant, antidiabetic and neuroprotective properties. Industrial Crops and Products, 108, 295-302.
- Liang, N. & Kitts, D.D. (2016). Role of chlorogenic acids in controlling oxidative and inflammatory stress conditions. Nutrients, 8, 16.
- Martinez-Gonzalez, A.I., Diaz-Sanchez, A.G., de la Rosa, L.A., Vargas-Requena, C.L., Bustos-Jaimes, I., & Alvarez-Parrilla, E. (2017). Polyphenolic compounds and digestive enzymes: in vitro non-covalent interactions. Molecules, 22, 669.
- Matthews, D.G., Caruso, M., Alcazar Magana, A., Wright, K.M., Maier, C.S., Stevens, J.F., Gray, N.E., Quinn, J.F., & Soumyanath, A. (2020). Caffeoylquinic Acids in Centella asiatica Reverse Cognitive Deficits in Male 5XFAD Alzheimer's Disease Model Mice. Nutrients, 12(11), 3488.
- Mükemre, M., Behçet, L., & Çakılcıoglu, U. (2015). Ethnobotanical study on medicinal plants in villages of Çatak (Van-Turkey). Journal of Ethnopharmacology, 166, 361–374.
- Naczk, M., & Shahidi, F. (2006). Phenolics in cereals, fruits and vegetables: Occurrence, extraction and analysis. Journal of Pharmaceutical and Biomedical Analysis, 41, 1523-1542.
- Oboh, G., Agunloye, O.M., Adefegha, S.A., Akinyemi, A.J., & Ademiluyi, A.O. (2015). Caffeic and chlorogenic acids inhibit key enzymes linked to type 2 diabetes (in vitro): a comparative study. Journal of Basic and Clinical Physiology and Pharmacology, 26(2), 165–170.
- Olthof, M.R., Hollman, P.C., & Katan, M.B. (2001). Chlorogenic acid and caffeic acid are absorbed in humans. The Journal of Nutrition, 131(1), 66–71.
- Ong, K.W., Hsu, A., & Tan, B.K. (2012). Chlorogenic acid stimulates glucose transport in skeletal muscle via AMPK activation: a contributor to the beneficial effects of coffee on diabetes. PLoS One, 7(3).
- Orhan, N., Hosbas, S., Orhan, D.D., Aslan, M., & Ergun, F. (2016). Enzyme inhibitory and radical scavenging effects of some antidiabetic plants of Turkey. Iran Journal of Basic Medicinal Sciences, 17, 426-32.
- Ou, B., Hampsch-Woodill, M., & Prior, R.L. (2001). Development and validation of an improved oxygen radical absorbance capacity assay using fluorescein as the fluorescent probe. Journal of Agricultural and Food Chemistry, 49, 4619–26.
- Özkan, G., Sagdıç, O., & Özçelik, H. (2004). Some Turkish endemic herb extracts as antimicrobial and antioxidant agents. 4th International Conggress Environmental Micropaleontology, Microbiology and Meiobenthology; 13-18 September, 2004; Isparta, Turkey; p. 151-154.
- Patadiya, N., Panchal, N., & Vaghel, V. (2021). A Review on Enzyme Inhibitors. International Research Journal of Pharmacy,12(6):12.
- Piljac-Žegarac, J., Šamec, D., & Piljac, A (2013). Chapter 11 - Herbal Teas: A Focus on Antioxidant Properties, Editor(s): Victor R. Preedy, Tea in Health and Disease Prevention, Academic Press, 129-140.
- Pisoschi, A.M., Pop, A., Iordache, F., Stanca, L., Predoi, G., & Serban, A.I. (2021). Oxidative stress mitigation by antioxidants - An overview on their chemistry and influences on health status. European Journal of Medicinal Chemistry, 209, 112891.
- Shahi, S., Ahmadian, E., Fathi, N., Eftekhari, A., Khalilov, R., & Dizaj, S.M. (2019). Preparation and physicochemical assessment of rutin-loaded gelatin nanoparticles. Journal of Advanced Chemical and Pharmaceutical Materials (JACPM), 2(2), 138–142.
- Shen, X.J., Zhou, J.D., Dong, J.Y., Ding, W.Q., & Wu, J.C. (2012). Dietary intake of n-3 fatty acids and colorectal cancer risk: a meta-analysis of data from 489 000 individuals. The British Journal of Nutrition, 108(9), 1550–1556.
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