Bioactive Compounds of Capsicum Species and Their Therapeutic Properties: A Comprehensive Review

Authors

  • Behzad Mohammadi *

    Department of Food Science and Technology, Afagh Higher Education Institute, Urmia 55700-57158, Iran

DOI:

https://doi.org/10.55121/fds.v3i1.838

Keywords:

Functional Foods, Capsicum spp., Capsinoids, Carotenoids, Therapeutic Properties, Metabolic Health

Abstract

Hot peppers, belonging to the Capsicum genus, are cultivated worldwide not only as spices and vegetables but also as valuable sources of bioactive compounds with potential health benefits. These plants contain a wide range of biologically active molecules, including capsaicinoids, capsinoids, carotenoids, phenolic compounds, vitamins, and peptides. Such compounds have attracted increasing scientific interest due to their antioxidant, anti-inflammatory, analgesic, antimicrobial, metabolic, and anticancer properties. In recent years, advances in phytochemical characterization and pharmacological studies have provided deeper insights into the mechanisms underlying the health-promoting effects of Capsicum-derived compounds. Evidence suggests that these bioactives may contribute to disease prevention and therapeutic support by modulating oxidative stress, inflammation, and key metabolic pathways. In this review, we summarize current knowledge on the major bioactive components of Capsicum species, with particular emphasis on their absorption, bioavailability, and biological activity. Special attention is given to their potential effects on cardiovascular, metabolic, neurological, gastrointestinal, and immune functions. In addition, emerging applications of hot peppers in the development of nutraceuticals, functional foods, and pharmaceutical products are discussed. Finally, existing limitations in the current literature are highlighted, and future research directions are proposed to better clarify their clinical relevance and safety.

References

[1] Jaiswal, V., Gahlaut, V., Kumar, N., et al., 2021. Genetics, Genomics and Breeding of Chili Pepper Capsicum frutescens L. and Other Capsicum Species. In: Al-Khayri, J.M., Jain, S.M., Johnson, D.V. (Eds.). Advances in Plant Breeding Strategies: Vegetable Crops, Volume 9: Fruits and Young Shoots. Springer: Cham, Switzerland. pp. 59–86.

[2] Barboza, G.E., García, C.C., de Bem Bianchetti, L., et al., 2022. Monograph of Wild and Cultivated Chili Peppers (Capsicum L., Solanaceae). PhytoKeys. 200, 1.

[3] Oh, J., Ku, K.-H., Lee, S.-K., et al., 2025. Water and Oil Matrix Effect on the Perceived Spiciness in Chili Pepper Powder. Journal of Sensory Studies. 40(2), e70028.‏

[4] Variyar, P.S., Suprasanna, P., 2024. Peppers—An Overview on the Bioactives and Their Nutritional, Functional Properties and Post-Harvest Processing. In: Variyar, P.S., Singh, I.P., Adiani, V.A., et al. (Eds.). Peppers: Biological, Health, and Postharvest Perspectives. CRC Press: Boca Raton, FL, USA. pp. 1–15.

[5] Akhtar, A., Asghar, W., Khalid, N., 2021. Phytochemical Constituents and Biological Properties of Domesticated Capsicum Species: A Review. Bioactive Compounds in Health and Disease. 4(9), 201–225.

[6] del Rocio Moreno-Ramírez, Y., Hernández-Bautista, A., López, P.A., et al., 2019. Variability in the Phytochemical Contents and Free Radical-Scavenging Capacity of Capsicum annuum var. glabriusculum (Wild Piquin Chili). Chemistry & Biodiversity. 16(10), e1900381.

[7] Bonaccio, M., Di Castelnuovo, A., Costanzo, S., et al., 2019. Chili Pepper Consumption and Mortality in Italian Adults. Journal of the American College of Cardiology. 74(25), 3139–3149.

[8] Srinivasan, K., 2016. Biological Activities of Red Pepper (Capsicum annuum) and Its Pungent Principle Capsaicin: A Review. Critical Reviews in Food Science and Nutrition. 56(9), 1488–1500.

[9] Popelka, P., Jevinová, P., Šmejkal, K., et al., 2017. Determination of Capsaicin Content and Pungency Level of Different Fresh and Dried Chilli Peppers. Folia Veterinaria. 61(2), 11–16.

[10] Mumpuni, D.R., Putri, H.S., Airlangga, P.S., et al., 2024. Transient Receptor Potential Vanilloid 1 in Acute Pain: A Literature Review. Pharmacognosy Journal. 16(5).

[11] Gannon, N.P., Lambalot, E.L., Vaughan, R.A., 2016. The Effects of Capsaicin and Capsaicinoid Analogs on Metabolic Molecular Targets in Highly Energetic Tissues and Cell Types. BioFactors. 42(3), 229–246.

[12] Abdel-Salam, O.M., Mózsik, G., 2023. Capsaicin, the Vanilloid Receptor TRPV1 Agonist in Neuroprotection: Mechanisms Involved and Significance. Neurochemical Research. 48(11), 3296–3315.

[13] Wang, F., Xue, Y., Fu, L., et al., 2022. Extraction, Purification, Bioactivity and Pharmacological Effects of Capsaicin: A Review. Critical Reviews in Food Science and Nutrition. 62(19), 5322–5348.

[14] Lang, Y., Kisaka, H., Sugiyama, R., et al., 2009. Functional Loss of pAMT Results in Biosynthesis of Capsinoids, Capsaicinoid Analogs, in Capsicum annuum cv. CH-19 Sweet. The Plant Journal. 59(6), 953–961.

[15] Uarrota, V.G., Maraschin, M., de Bairros, A.d.F.M., et al., 2021. Factors Affecting the Capsaicinoid Profile of Hot Peppers and Biological Activity of Their Non-Pungent Analogs (Capsinoids) Present in Sweet Peppers. Critical Reviews in Food Science and Nutrition. 61(4), 649–665.

[16] Batiha, G.E.S., Alqahtani, A., Ojo, O.A., et al., 2020. Biological Properties, Bioactive Constituents, and Pharmacokinetics of Some Capsicum spp. and Capsaicinoids. International Journal of Molecular Sciences. 21(15), 5179.

[17] Lu, M., Ho, C.T., Huang, Q., 2017. Extraction, Bioavailability, and Bioefficacy of Capsaicinoids. Journal of Food and Drug Analysis. 25(1), 27–36.

[18] Whiting, S., Derbyshire, E., Tiwari, B.K., 2012. Capsaicinoids and Capsinoids: A Potential Role for Weight Management? A Systematic Review of the Evidence. Appetite. 59(2), 341–348.

[19] Irandoost, P., Lotfi Yagin, N., Namazi, N., et al., 2021. The Effect of Capsaicinoids or Capsinoids in Red Pepper on Thermogenesis in Healthy Adults: A Systematic Review and Meta-Analysis. Phytotherapy Research. 35(3), 1358–1377.

[20] Kolašinac, S.M., Dajić-Stevanović, Z., Kilibarda, S.N., et al., 2021. Carotenoids: New Applications of “Old” Pigments. Phyton. 90(4), 1041–1062.

[21] Mohd Hassan, N., Yusof, N.A., Yahaya, A.F., et al., 2019. Carotenoids of Capsicum Fruits: Pigment Profile and Health-Promoting Functional Attributes. Antioxidants. 8(10), 469.

[22] Arimboor, R., Natarajan, R.B., Menon, K.R., et al., 2015. Red Pepper (Capsicum annuum) Carotenoids as a Source of Natural Food Colors: Analysis and Stability—A Review. Journal of Food Science and Technology. 52(3), 1258–1271.

[23] Tomlekova, N., Spasova-Apostolova, V., Pantchev, I., et al., 2021. Mutation Associated with Orange Fruit Color Increases Concentrations of β-Carotene in a Sweet Pepper Variety (Capsicum annuum L.). Foods. 10(6), 1225.

[24] Xu, J., Lin, J., Peng, S., et al., 2023. Development of an HPLC-PDA Method for the Determination of Capsanthin, Zeaxanthin, Lutein, β-Cryptoxanthin and β-Carotene Simultaneously in Chili Peppers and Products. Molecules. 28(5), 2362.

[25] Bonaccorsi, I., Cacciola, F., Utczas, M., et al., 2016. Characterization of the Pigment Fraction in Sweet Bell Peppers (Capsicum annuum L.) Harvested at Green and Overripe Yellow and Red Stages by Offline Multidimensional Convergence Chromatography/Liquid Chromatography–Mass Spectrometry. Journal of Separation Science. 39(17), 3281–3291.

[26] Jomova, K., Valko, M., 2013. Health Protective Effects of Carotenoids and Their Interactions with Other Biological Antioxidants. European Journal of Medicinal Chemistry. 70, 102–110.

[27] De la Cruz-Ricardez, D., del Carmen Lagunes-Espinoza, L., Soto-Hernáandez, R.M., et al., 2024. Phytochemical Profile of Capsicum spp. Fruits Related to Ripeness Level, Shading and Harvest Season in the Southeast of Mexico. Chilean Journal of Agricultural Research. 84(2), 211–224.

[28] Agarwal, R., Hong, H.T., Hayward, A., et al., 2020. Carotenoid Profiling of Orange-Coloured Capsicums: In Search of High-Zeaxanthin Varieties for Eye Health. Proceedings of the 1st International Electronic Conference on Food Science and Functional Foods. 70(1), 84.

[29] Li, P., Zhang, X., Liu, Y., et al., 2022. Characterization of 75 Cultivars of Four Capsicum Species in Terms of Fruit Morphology, Capsaicinoids, Fatty Acids, and Pigments. Applied Sciences. 12(12), 6292.‏

[30] Villa-Rivera, M.G., Ochoa-Alejo, N., 2020. Chili Pepper Carotenoids: Nutraceutical Properties and Mechanisms of Action. Molecules. 25(23), 5573.

[31] Cho, S.Y., Kim, H.W., Lee, M.K., et al., 2020. Antioxidant and Anti-Inflammatory Activities in Relation to the Flavonoids Composition of Pepper (Capsicum annuum L.). Antioxidants. 9(10), 986.

[32] Dludla, P.V., Cirilli, I., Marcheggiani, F., et al., 2023. Bioactive Properties, Bioavailability Profiles, and Clinical Evidence of the Potential Benefits of Black Pepper (Piper nigrum) and Red Pepper (Capsicum annuum) against Diverse Metabolic Complications. Molecules. 28(18), 6569.

[33] Vulić, J., Šeregelj, V., Kalušević, A., et al., 2019. Bioavailability and Bioactivity of Encapsulated Phenolics and Carotenoids Isolated from Red Pepper Waste. Molecules. 24(15), 2837.

[34] Pugliese, A., Loizzo, M.R., Tundis, R., et al., 2013. The Effect of Domestic Processing on the Content and Bioaccessibility of Carotenoids from Chili Peppers (Capsicum Species). Food Chemistry. 141(3), 2606–2613.

[35] Olatunji, T.L., Afolayan, A.J., 2018. The Suitability of Chili Pepper (Capsicum annuum L.) for Alleviating Human Micronutrient Dietary Deficiencies: A Review. Food Science & Nutrition. 6(8), 2239–2251.

[36] Kirana, R., Deswina, P., Dwiatmini, K., 2023. Mapping of Chili Varieties by Vitamin C Levels. In Proceedings of the Conference. IOP Conference Series: Earth and Environmental Science. 1287(1), 012009.

[37] Orobiyi, A., Ahissou, H., Gbaguidi, F., et al., 2015. Capsaicin and Ascorbic Acid Content in the High Yielding Chili Pepper (Capsicum annuum L.) Landraces of Northern Benin. International Journal of Current Microbiology and Applied Sciences. 4(9), 394–403.

[38] Perveen, S., Zafar, S., Iqbal, N., et al., 2021. Provitamin A Carotenoids. In: Zia-Ul-Haq, M., Dewanjee, S., Riaz, M. (Eds.). Carotenoids: Structure and Function in the Human Body. Springer International Publishing: Cham, Switzerland. pp. 775–797.

[39] Buarque, F.S., Soares, M.A., Ribeiro, B.D., et al., 2025. Development of Hydrophobic Eutectic Solvents Composed of Dl-Menthol and Fatty Acids/Alcohols: Application in the Extraction of Capsaicinoids and Carotenoids from Capsicum frutescens. Journal of Molecular Liquids. 417, 126591.‏

[40] Kim, T.J., Choi, J., Kim, K.W., et al., 2017. Metabolite Profiling of Peppers of Various Colors Reveals Relationships Between Tocopherol, Carotenoid, and Phytosterol Content. Journal of Food Science. 82(12), 2885–2893.

[41] Kantar, M.B., Anderson, J.E., Lucht, S.A., et al., 2016. Vitamin Variation in Capsicum spp. Provides Opportunities to Improve Nutritional Value of Human Diets. PLoS One. 11(8), e0161464.

[42] Zhou, C.X., Zhang, W., Yu, B.G., et al., 2024. Global Analysis of Spatio-Temporal Variation in Mineral Nutritional Quality of Pepper (Capsicum spp.) Fruit and Its Regulatory Variables: A Meta-Analysis. Food Research International. 193, 114855.

[43] Hernández-Pérez, T., Gómez-García, M.D.R., Valverde, M.E., et al., 2020. Capsicum annuum (Hot Pepper): An Ancient Latin-American Crop with Outstanding Bioactive Compounds and Nutraceutical Potential. Comprehensive Reviews in Food Science and Food Safety. 19(6), 2972–2993.

[44] Martínez, S., López, M., González-Raurich, M., et al., 2005. The Effects of Ripening Stage and Processing Systems on Vitamin C Content in Sweet Peppers (Capsicum annuum L.). International Journal of Food Sciences and Nutrition. 56(1), 45–51.

[45] Sanatombi, K., Rajkumari, S., 2020. Effect of Processing on Quality of Pepper: A Review. Food Reviews International. 36(6), 626–643.

[46] Ribeiro, S.F., Carvalho, A.O., Da Cunha, M., et al., 2007. Isolation and Characterization of Novel Peptides from Chilli Pepper Seeds: Antimicrobial Activities Against Pathogenic Yeasts. Toxicon. 50(5), 600–611.

[47] Oliveira, A.P.B.F., Resende, L.M., Rodrigues, R., et al., 2022. Antimicrobial Peptides of the Genus Capsicum: A Mini Review. Horticulture, Environment, and Biotechnology. 63(4), 453–466.

[48] Sanatombi, K., 2023. Antioxidant Potential and Factors Influencing the Content of Antioxidant Compounds of Pepper: A Review with Current Knowledge. Comprehensive Reviews in Food Science and Food Safety. 22(4), 3011–3052.

[49] Oboh, G., Rocha, J.B.T., 2007. Distribution and Antioxidant Activity of Polyphenols in Ripe and Unripe Tree Pepper (Capsicum pubescens). Journal of Food Biochemistry. 31(4), 456–473.

[50] Nandagopal, A., Nemala, A.R., 2024. Role of Capsaicin in Cardiovascular Diseases. In: Swamy, M.K.S., Kumar, A. (Eds.). Capsaicinoids: From Natural Sources to Biosynthesis and Their Clinical Applications. Springer Nature: Singapore. pp. 373–394.

[51] Ferreira, L.G.B., Faria, J.V., Dos Santos, J.P.S., et al., 2020. Capsaicin: TRPV1-Independent Mechanisms and Novel Therapeutic Possibilities. European Journal of Pharmacology. 887, 173356.

[52] Chamikara, M.D.M., Dissanayake, D.R.R.P., Ishan, M., et al., 2016. Dietary, Anticancer and Medicinal Properties of the Phytochemicals in Chili Pepper (Capsicum spp.). Ceylon Journal of Science. 45(3), 5–20.

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