Piperine—The Bioactive Compound of Black Pepper: From Isolation to Medicinal Formulations
Leila Gorgani
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Search for more papers by this authorCorresponding Author
Maedeh Mohammadi
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Direct inquiries to author Mohammadi (E-mail: [email protected]).Search for more papers by this authorGhasem D. Najafpour
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Search for more papers by this authorMaryam Nikzad
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Search for more papers by this authorLeila Gorgani
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Search for more papers by this authorCorresponding Author
Maedeh Mohammadi
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Direct inquiries to author Mohammadi (E-mail: [email protected]).Search for more papers by this authorGhasem D. Najafpour
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Search for more papers by this authorMaryam Nikzad
Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani Univ. of Technology, 47148 Babol, Iran
Search for more papers by this authorAbstract
Piperine is the major bio-active component of pepper, which imparts pungency and biting taste to it. This naturally occurring alkaloid has numerous demonstrated health effects and beneficial therapeutic properties; nevertheless, its biological applications are limited due to its poor solubility in aqueous environments. This emphasizes an implementation of advanced extraction approaches which could enhance the extraction yield of piperine from pepper and also the development of new formulations containing piperine to improve its in vivo bioavailability. This paper presents a review on the therapeutic and medicinal effects of piperine, its isolation from pepper fruit and the development of new formulations for its medicinal (pharmaceutical) applications. A thorough review on conventional and advanced separation techniques for the extraction of piperine from pepper is presented and an outline of the most significant conditions to improve the extraction yield is provided and discussed. Different methods used to measure and quantify the isolated piperine are also reviewed. An overview of biotechnological advancements for nanoparticle formulations of piperine or its incorporation in lipid formulations, which could enhance its bioavailability, is also presented.
References
- Agarwal OP. 2010. Chemistry of organic natural products. Meerut, India: Goel Publishing House.
- Akbarzadeh A, Rezaei-Sadabady R, Davaran S, Joo SW, Zarghami N, Hanifehpour Y, Samiei M, Kouhi M, Nejati-Koshki K. 2013. Liposome: classification, preparation, and applications. Nanoscale Res Lett 8: 1–9.
- Angell CA, Ansari Y, Zhao Z. 2012. Ionic liquids: past, present, and future. Faraday Discuss 154: 9–27.
- Aparicio S, Atilhan M, Karadas F. 2010. Thermophysical properties of pure ionic liquids: review of present situation. Ind Eng Chem Res 49: 9580–95.
- Ashour EA, Majumdar S, Alsheteli A, Alshehri S, Alsulays B, Feng X, Gryczke A, Kolter K, Langley N, Repka MA. 2016. Hot melt extrusion as an approach to improve solubility, permeability, and oral absorption of a psychoactive natural product, piperine. J Pharm Pharmacol 68: 989–98.
- Atal C, Dubey R, Singh J. 1985. Biochemical basis of enhanced drug bioavailability by piperine: evidence that piperine is a potent inhibitor of drug metabolism. J Pharmacol Exp The 232: 258–62.
- Azmir J, Zaidul I, Rahman M, Sharif K, Mohamed A, Sahena F, Jahurul M, Ghafoor K, Norulaini N, Omar A. 2013. Techniques for extraction of bioactive compounds from plant materials: a review. J Food Eng 117: 426–36.
- Bae G-S, Kim M-S, Jung W-S, Seo S-W, Yun S-W, Kim SG, Park R-K, Kim E-C, Song H-J, Park S-J. 2010. Inhibition of lipopolysaccharide-induced inflammatory responses by piperine. Eur J Pharmacol 642: 154–62.
- Bagchi K, Puri S. 1998. Free radicals and antioxidants in health and disease. East Mediterr Health J 4: 350–60.
- Bai Y-F, Xu H. 2000. Protective action of piperine against experimental gastric ulcer. Acta Pharmacol Sin 21: 357–9.
- Balakrishnan V, Varma S, Chatterji D. 2001. Piperine augments transcription inhibitory activity of rifampicin by severalfold in Mycobacterium smegmatis. Curr Sci 80: 1302–5.
- Balasubramanian D, Srinivas V, Gaikar V, Sharma M. 1989. Aggregation behavior of hydrotropic compounds in aqueous solution. J Phys Chem 93: 3865–70.
- Bang JS, Choi HM, Sur B-J, Lim S-J, Kim JY, Yang H-I, Yoo MC, Hahm D-H, Kim KS. 2009. Anti-inflammatory and antiarthritic effects of piperine in human interleukin 1β-stimulated fibroblast-like synoviocytes and in rat arthritis models. Arthritis Res Ther 11: 1–9.
- Bayley S. 1951. The dielectric properties of various solid crystalline proteins, amino acids, and peptides. Trans Faraday Soc 47: 509–17.
- Benita S. 2005. Microencapsulation: methods and industrial applications. Boca Raton, Fla.: CRC Press.
10.1201/9781420027990 Google Scholar
- Benthin B, Danz H, Hamburger M. 1999. Pressurized liquid extraction of medicinal plants. J Chromatogr A 837: 211–9.
- Bhat M, Gaikar V. 1999. Characterization of interaction between butyl benzene sulfonates and cetyl trimethylammonium bromide in mixed aggregate systems. Langmuir 15: 4740–51.
- Boddupalli BM, Ramani R, Subramaniam B, Anisetti RN. 2012. In vitro and in vivo evaluation of hepato-protection and anti-ulcer activities of piperine gastro retentive micropspheres. Asian Pac J Trop Biomed 2: 1237–40.
10.1016/S2221-1691(12)60392-X Google Scholar
- Cao X, Ye X, Lu Y, Yu Y, Mo W. 2009. Ionic liquid-based ultrasonic-assisted extraction of piperine from white pepper. Anal Chim Acta 640: 47–51.
- Chan C-H, Yusoff R, Ngoh G-C, Kung FW-L. 2011. Microwave-assisted extractions of active ingredients from plants. J Chromatogr A 1218: 6213–25.
- Chatel G, MacFarlane D. 2014. Ionic liquids and ultrasound in combination: synergies and challenges. Chem Soc Rev 43: 8132–49.
- Chowdhury SA, Vijayaraghavan R, MacFarlane D. 2010. Distillable ionic liquid extraction of tannins from plant materials. Green Chem 12: 1023–8.
- Cintas P, Luche J-L. 1999. Green chemistry. The sonochemical approach. Green Chem 1: 115–25.
- Committee AM. 1984. Application of gas-liquid chromatography to the analysis of essential oils. Part XI. Monographs for seven essential oils. Analyst 109: 1343–60.
10.1039/an9840901343 Google Scholar
- Darshan S, Doreswamy R. 2004. Patented antiinflammatory plant drug development from traditional medicine. Phytother Res 18: 343–57.
- De Castro ML, Garcıa-Ayuso L. 1998. Soxhlet extraction of solid materials: an outdated technique with a promising innovative future. Anal Chim Acta 369: 1–10.
- Do MT, Kim HG, Choi JH, Khanal T, Park BH, Tran TP, Jeong TC, Jeong HG. 2013. Antitumor efficacy of piperine in the treatment of human HER2-overexpressing breast cancer cells. Food Chem 141: 2591–9.
- Doucette CD, Hilchie AL, Liwski R, Hoskin DW. 2013. Piperine, a dietary phytochemical, inhibits angiogenesis. J Nutr Biochem 24: 231–9.
- Dutta S, Bhattacharjee P. 2015. Enzyme-assisted supercritical carbon dioxide extraction of black pepper oleoresin for enhanced yield of piperine-rich extract. J Biosci Bioeng 120: 17–23.
- Elnaggar YS, Etman SM, Abdelmonsif DA, Abdallah OY. 2015. Intranasal piperine-loaded chitosan nanoparticles as brain-targeted therapy in Alzheimer's disease: optimization, biological efficacy, and potential toxicity. J Pharm Sci 104: 3544–56.
- Entezari MH, Kruus P. 1996. Effect of frequency on sonochemical reactions II. Temperature and intensity effects. Ultrason Sonochem 3: 19–24.
- Epstein WW, Netz DF, Seidel JL. 1993. Isolation of piperine from black pepper. J Chem Educ 70: 598–599.
- Eskilsson CS, Björklund E. 2000. Analytical-scale microwave-assisted extraction. J Chromatogr A 902: 227–50.
- Gaikar VG, Raman G. 2002. Process for extraction of piperine from piper species. Google Patents.
- Graham HD. 1965a. Quantitative determination of piperine. I. The Komarowsky reaction. J Food Sci 30: 644–50.
- Graham HD. 1965b. Quantitative determination of piperine. II. Direct determination with phosphoric acid. J Food Sci 30: 651–5.
- Graham HD. 1965c. Reaction of piperine with nitric acid. Adaptation to quantitative assay of the piperine content of pepper. J Pharm Sci 54: 319–21.
- Grant E, Halstead BJ. 1998. Dielectric parameters relevant to microwave dielectric heating. Chem Soc Rev 27: 213–24.
- Gursoy RN, Benita S. 2004. Self-emulsifying drug delivery systems (SEDDS) for improved oral delivery of lipophilic drugs. Biomed Pharmacother 58: 173–82.
- Henglein A, Gutierrez M. 1993. Sonochemistry and sonoluminescence: effects of external pressure. J Phys Chem 97: 158–62.
- Herrero M, Cifuentes A, Ibanez E. 2006. Sub-and supercritical fluid extraction of functional ingredients from different natural sources: plants, food-by-products, algae and microalgae: a review. Food Chem 98: 136–48.
- Herrero M, Mendiola JA, Cifuentes A, Ibáñez E. 2010. Supercritical fluid extraction: recent advances and applications. J Chromatogr A 1217: 2495–511.
- Hirasa K, Takemasa M. 1998. Spice science and technology. Boca Raton, Fla.: CRC Press.
10.1201/9780367800451 Google Scholar
- Hiwale A, Dhuley J, Naik S. 2002. Effect of co-administration of piperine on pharmacokinetics of beta-lactam antibiotics in rats. Ind J Exp Biol 40: 277–81.
- Huddleston JG, Visser AE, Reichert WM, Willauer HD, Broker GA, Rogers RD. 2001. Characterization and comparison of hydrophilic and hydrophobic room temperature ionic liquids incorporating the imidazolium cation. Green Chem 3: 156–64.
- Huie CW. 2002. A review of modern sample-preparation techniques for the extraction and analysis of medicinal plants. Anal Bioanal Chem 373: 23–30.
- Hwang YP, Yun HJ, Kim HG, Han EH, Choi JH, Chung YC, Jeong HG. 2011. Suppression of phorbol-12-myristate-13-acetate-induced tumor cell invasion by piperine via the inhibition of PKCα/ERK1/2-dependent matrix metalloproteinase-9 expression. Toxicol Lett 203: 9–19.
- Jain S, Meka SRK, Chatterjee K. 2016. Engineering a piperine eluting nanofibrous patch for cancer treatment. ACS Biomater Sci Eng 2: 1376–85.
- Janakiraman K, Manavalan R. 2008. Studies on effect of piperine on oral bioavailability of ampicillin and norfloxacin. Afr J Trad Compl Altern Med 5: 257–62.
- Jessop PG. 2011. Searching for green solvents. Green Chem 13: 1391–8.
- Johnson JJ, Nihal M, Siddiqui IA, Scarlett CO, Bailey HH, Mukhtar H, Ahmad N. 2011. Enhancing the bioavailability of resveratrol by combining it with piperine. Mol Nutr Food Res 55: 1169–76.
- Kanaki N, Dave M, Padh H, Rajani M. 2008. A rapid method for isolation of piperine from the fruits of Piper nigrum Linn. J Natur Med 62: 281–3.
- Kappe CO, Stadler A, Dallinger D. 2012. Microwaves in organic and medicinal chemistry. New Jersey, N.J.: John Wiley & Sons.
10.1002/9783527647828 Google Scholar
- Kaul I, Kapil A. 1993. Evaluation of liver protective potential of piperine: an active principle of black pepper. Planta Med 59: 413–17.
- Khajuria A, Thusu N, Zutshi U. 2002. Piperine modulates permeability characteristics of intestine by inducing alterations in membrane dynamics: influence on brush border membrane fluidity, ultrastructure, and enzyme kinetics. Phytomedicine 9: 224–31.
- Khajuria A, Zutshi U, Bedi K. 1998. Permeability characteristics of piperine on oral absorption: an active alkaloid from peppers and a bioavailability enhancer. Ind J Exp Biol 36: 46–50.
- Khatri S, Awasthi R. 2016. Piperine containing floating microspheres: an approach for drug targeting to the upper gastrointestinal tract. Drug Delivery Transl Res 6: 299–307.
- Kim SH, Lee YC. 2009. Piperine inhibits eosinophil infiltration and airway hyperresponsiveness by suppressing T cell activity and Th2 cytokine production in the ovalbumin-induced asthma model. J Pharm Pharmacol 61: 353–9.
- Kumoro A, Singh H, Hasan M. 2009. Solubility of piperine in supercritical and near critical carbon dioxide. Chin J Chem Eng 17: 1014–20.
- Kurzhals H-A, Hubert P. 1980. Extraction of plant and animal materials. German patent 2844781.
- Lang Q, Wai CM. 2001. Supercritical fluid extraction in herbal and natural product studies: a practical review. Talanta 53: 771–82.
- Lee J, Lee SC, Acharya G, Chang C-J, Park K. 2003. Hydrotropic solubilization of paclitaxel: analysis of chemical structures for hydrotropic property. Pharm Res 20: 1022–30.
- Leonard N, Manske R, Holms H. 1960. The alkaloids, Vol. 7. New York/London: Academic Press.
- Maherani B, Arab-Tehrany E, R Mozafari M, Gaiani C, Linder M. 2011. Liposomes: a review of manufacturing techniques and targeting strategies. Curr Nanosci 7: 436–52.
- Makhov P, Golovine K, Canter D, Kutikov A, Simhan J, Corlew MM, Uzzo RG, Kolenko VM. 2012. Co-administration of piperine and docetaxel results in improved antitumor efficacy via inhibition of CYP3A4 activity. Prostate 72: 661–7.
- Mandal V, Mohan Y, Hemalatha S. 2007. Microwave assisted extraction—an innovative and promising extraction tool for medicinal plant research. Pharmacogn Rev 1: 7–18.
- Mason T, Chemat F, Vinatoru M. 2011. The extraction of natural products using ultrasound or microwaves. Curr Org Chem 15: 237–47.
- Mason TJ. 1999. Ultrasonically assisted extraction of bioactive principles from plants and their constituents. Adv Sonochem 5: 209.
10.1016/S1569-2868(99)80007-2 Google Scholar
- Meghwal M, Goswami T. 2013. Piper nigrum and piperine: an update. Phytother Res 27: 1121–30.
- Meireles MAA. 2008. Extracting bioactive compounds for food products: theory and applications. Boca Raton, Fla.: CRC Press.
10.1201/9781420062397 Google Scholar
- Merisko-Liversidge EM, Liversidge GG. 2008. Drug nanoparticles: formulating poorly water-soluble compounds. Toxicol Pathol 36: 43–8.
- Mishra SP, Gaikar VG. 2009. Hydrotropic extraction process for recovery of forskolin from Coleus forskohlii roots. Ind Eng Chem Res 48: 8083–90.
- Mohanraj V, Chen Y. 2007. Nanoparticles-a review. Trop J Pharm Res 5: 561–73.
10.4314/tjpr.v5i1.14634 Google Scholar
- Moorthi C, Krishnan K, Manavalan R, Kathiresan K. 2012. Preparation and characterization of curcumin–piperine dual drug loaded nanoparticles. Asian Pac J Trop Biomed 2: 841–8.
- Mueller K, Hingst J. 2013. The athlete's guide to sports supplements. Illinois, Ill.: Human Kinetics.
- Mujumdar AM, Dhuley JN, Deshmukh VK, Raman PH, Naik SR. 1990. Antiinflammatory activity of piperine. Jpn J Med Sci Biol 43: 95–100.
- Mukhopadhyay M. 2000. Natural extracts using supercritical carbon dioxide. Boca Raton, Fla.: CRC Press.
10.1201/9781420041699 Google Scholar
- Nair KP. 2011. Agronomy and economy of black pepper and cardamom. Elsevier. Amsterdam, Netherlands.
- Noyer I, Fayet B, Pouliquen-Sonaglia I, Guerere M, Lesgard J. 1999. Quantitative analysis of pungent principles of pepper oleoresins: comparative study of 3 analytical methods. Analysis 27: 69–74.
- Pachauri M, Gupta ED, Ghosh PC. 2015. Piperine loaded PEG-PLGA nanoparticles: preparation, characterization, and targeted delivery for adjuvant breast cancer chemotherapy. J Drug Delivery Sci Technol 29: 269–82.
- Pal SL, Jana U, Manna P, Mohanta G, Manavalan R. 2011. Nanoparticle: an overview of preparation and characterization. J App Pharm Sci 1: 228–34.
- Parthasarathy VA, Chempakam B, Zachariah TJ. 2008. Chemistry of spices. London: CABI.
- Patel S, Devada S, Patel H, Patel N, Bhavsar S, Thaker A. 2011. Influence of co-administration of piperine on pharmacokinetic profile of gatifloxacin in layer birds. Glob Vet 7: 427–32.
- Patil UK, Singh A, Chakraborty AK. 2011. Role of piperine as a bioavailability enhancer. Int J Recent Adv Pharmac Res 4: 16–23.
- Pentak D. 2016. In vitro spectroscopic study of piperine-encapsulated nanosize liposomes. Eur Biophys J 45: 175–86.
- Peter KV. 2006. Handbook of herbs and spices.Sawston, UK: Woodhead Publishing.
10.1533/9781845691717 Google Scholar
- Pethig R. 1985. Dielectric and electrical properties of biological materials. J Bioelectricity 4: 7–9.
10.3109/15368378509033258 Google Scholar
- Platel K, Srinivasan K. 2000. Influence of dietary spices and their active principles on pancreatic digestive enzymes in albino rats. Food/Nahrung 44: 42–6.
10.1002/(SICI)1521-3803(20000101)44:1<42::AID-FOOD42>3.0.CO;2-D CASPubMedWeb of Science®Google Scholar
- Pourmortazavi SM, Hajimirsadeghi SS. 2007. Supercritical fluid extraction in plant essential and volatile oil analysis. J Chromatogr A 1163: 2–24.
- Pradeep C, Kuttan G. 2002. Effect of piperine on the inhibition of lung metastasis induced B16F-10 melanoma cells in mice. Clin Exp Metastasis 19: 703–8.
- Priprem A, Chonpathompikunlert P, Sutthiparinyanont S, Wattanathorn J. 2011. Antidepressant and cognitive activities of intranasal piperine-encapsulated liposomes. Adv Biosci Biotechnol 2: 108–16.
- Pruthi J. 1999. Quality assurance in spices and spice products, modern methods of analysis. New Delhi, India: Allied Publishers Ltd.
- Pruthi JS. 1993. Major spices of India: crop management and post-harvest technology. New Delhi, India: Indian Council of Agricultural Research.
- Rajopadhye AA, Namjoshi TP, Upadhye AS. 2012. Rapid validated HPTLC method for estimation of piperine and piperlongumine in root of Piper longum extract and its commercial formulation. Braz J Pharmacog 22: 1355–61.
- Raman G, Gaikar VG. 2002a. Extraction of piperine from Piper nigrum (black pepper) by hydrotropic solubilization. Ind Eng Chem Res 41: 2966–76.
- Raman G, Gaikar VG. 2002b. Microwave-assisted extraction of piperine from Piper nigrum. Ind Eng Chem Res 41: 2521–8.
- Raso J, Manas P, Pagan R, Sala FJ. 1999. Influence of different factors on the output power transferred into medium by ultrasound. Ultrason Sonochem 5: 157–62.
- Rastogi V, Shukla SS, Singh R, Lal N, Yadav P. 2016. Microspheres: a promising drug carrier. J Drug Deliv Ther 6: 18–26.
- Rathod SS, Rathod VK. 2014. Extraction of piperine from Piper longum using ultrasound. Ind Crops Prod 58: 259–64.
- Ravindran P. 2003. Black pepper: Piper nigrum. Boca Raton, Fla.: CRC Press.
- Reverchon E, De Marco I. 2006. Supercritical fluid extraction and fractionation of natural matter. J Supercrit Fluids 38: 146–66.
- Ridhurkar D, Vajdai A, Zsigmond Z. 2016. Hot-melt extrusion (HME) and its application for pharmacokinetic improvement of poorly water soluble drugs. Pharmacol, Toxicol Biomed Reports 2: 47–51.
- Rinwa P, Kumar A. 2012. Piperine potentiates the protective effects of curcumin against chronic unpredictable stress-induced cognitive impairment and oxidative damage in mice. Brain Res 1488: 38–50.
- Rostagno MA, Prado JM. 2013. Natural product extraction: principles and applications. London: Royal Society of Chemistry.
10.1039/9781849737579 Google Scholar
- Sabina EP, Souriyan ADH, Jackline D, Rasool MK. 2010. Piperine, an active ingredient of black pepper attenuates acetaminophen-induced hepatotoxicity in mice. Asian Pac J Trop Dis 3: 971–6.
- Samykutty A, Shetty AV, Dakshinamoorthy G, Bartik MM, Johnson GL, Webb B, Zheng G, Chen A, Kalyanasundaram R, Munirathinam G. 2013. Piperine, a bioactive component of pepper spice exerts therapeutic effects on androgen-dependent and androgen-independent prostate cancer cells. Planta Med 8: e65889.
- Sankar KU. 1989. Studies on the physicochemical characteristics of volatile oil from pepper (Piper nigrum) extracted by supercritical carbon dioxide. J Sci Food Agric 48: 483–93.
- Shao B, Cui C, Ji H, Tang J, Wang Z, Liu H, Qin M, Li X, Wu L. 2015. Enhanced oral bioavailability of piperine by self-emulsifying drug delivery systems: in vitro, in vivo and in situ intestinal permeability studies. Drug Deliv 22: 740–7.
- Singh A, Rao A. 1993. Evaluation of the modulatory influence of black pepper (Piper nigrum, L.) on the hepatic detoxication system. Cancer Lett 72: 5–9.
- Singh D. 2014. Advances in plant biopesticides. Berlin: Springer.
10.1007/978-81-322-2006-0 Google Scholar
- Singh NK, Kumar P, Gupta DK, Singh S, Singh VK. 2011. UV-spectrophotometric method development for estimation of piperine in Chitrakadi vati. Der Pharmacia Lettre 3: 178–82.
- Soppimath KS, Kulkarni AR, Rudzinski WE, Aminabhavi TM. 2001. Microspheres as floating drug-delivery systems to increase gastric retention of drugs. Drug Metab Revi 33: 149–60.
- Sosa S, Balick M, Arvigo R, Esposito R, Pizza C, Altinier G, Tubaro A. 2002. Screening of the topical anti-inflammatory activity of some Central American plants. J Ethnopharmacol 81: 211–5.
- Sovová H, Jez J, Bártlová M, St'astová J. 1995. Supercritical carbon dioxide extraction of black pepper. J Supercrit Fluids 8: 295–301.
- Srinivasan K. 2007. Black pepper and its pungent principle - piperine: a review of diverse physiological effects. Crit Rev Food Sci Nutr 47: 735–48.
- Subbarao CV, Chakravarthy IK, Sai Bharadwaj A, Prasad KM. 2012. Functions of hydrotropes in solutions. Chem Eng Technol 35: 225–37.
- Subramanian R, Subbramaniyan P, Ameen JN, Raj V. 2011. Double bypasses Soxhlet apparatus for extraction of piperine from Piper nigrum. Arabian J Chem In press.
- Sun Y, Liu D, Chen J, Ye X, Yu D. 2011. Effects of different factors of ultrasound treatment on the extraction yield of the all-trans-β-carotene from citrus peels. Ultrason Sonochem 18: 243–9.
- Sunila E, Kuttan G. 2004. Immunomodulatory and antitumor activity of Piper longum Linn. and piperine. J Ethnopharmacol 90: 339–46.
- Tainter DR, Grenis AT. 2001. Spices and seasonings: a food technology handbook. New Jersey, N.J.: John Wiley & sons.
- Tasleem F, Azhar I, Ali SN, Perveen S, Mahmood ZA. 2014. Analgesic and anti-inflammatory activities of Piper nigrum L. Asian Pac J Trop Dis 7: 461–8.
- Toma M, Vinatoru M, Paniwnyk L, Mason T. 2001. Investigation of the effects of ultrasound on vegetal tissues during solvent extraction. Ultrason Sonochem 8: 137–42.
- Tu Y, Fu J, Sun D, Zhang J, Yao N, Huang D, Shi Z. 2014. Preparation, characterisation and evaluation of curcumin with piperine-loaded cubosome nanoparticles. J Microencapsulation 31: 551–9.
- Ulbricht C, Chao W, Costa D, Rusie-Seamon E, Weissner W, Woods J. 2008. Clinical evidence of herb-drug interactions: a systematic review by the natural standard research collaboration. Curr Drug Metab 9: 1063–120.
- Upadhyay V, Sharma N, Joshi HM, Malik A, Mishra M, Singh B, Tripathi S. 2013. Development and validation of rapid RPHPLC, method for estimation of piperine in Piper nigrum L. Int J Herb Med 1: 6–9.
- Vasavirama K, Upender M. 2014. Piperine: a valuable alkaloid from piper species. Int J Pharm Pharm Sci 6: 34–8.
- Veerareddy P, Vobalaboina V. 2008. Pharmacokinetics and tissue distribution of piperine lipid nanospheres. Die Pharmazie- Int J Pharmac Sci 63: 352–5.
- Veerareddy P, Vobalaboina V, Nahid A. 2004. Formulation and evaluation of oil-in-water emulsions of piperine in visceral leishmaniasis. Die Pharmazie- Int J Pharmac Sci 59: 194–7.
- Vijayakumar R, Surya D, Nalini N. 2004. Antioxidant efficacy of black pepper (Piper nigrum L.) and piperine in rats with high-fat-diet-induced oxidative stress. Redox Report 9: 105–10.
- Vinatoru M. 2001. An overview of the ultrasonically assisted extraction of bioactive principles from herbs. Ultrason Sonochem 8: 303–13.
- Vishvnath G, Jain U. 2011. Estimation of piperine by UV-spectrophotometric method in herbal formulation, Pippli churna. Int J Res Pharmac Biomed Sci 2: 550–3.
- Vitzthum O, Hubert P. 1978. Process for the production of spice extracts. Google Patents.
- Vyas J, Itankar P, Tauqeer M, Kelkar A, Agrawal M. 2013. Development of HPTLC method for estimation of piperine, guggulsterone E and Z in polyherbal formulation. Pharmacogn J 5: 259–64.
10.1016/j.phcgj.2013.10.003 Google Scholar
- Wang L, Weller CL. 2006. Recent advances in extraction of nutraceuticals from plants. Trends Food Sci Technol 17: 300–12.
- Wang Y, You J, Yu Y, Qu C, Zhang H, Ding L, Zhang H, Li X. 2008. Analysis of ginsenosides in Panax ginseng in high pressure microwave-assisted extraction. Food Chem 110: 161–7.
- Wasserscheid P, Welton T. 2008. Ionic liquids in synthesis. Wiley Online Library.
10.1002/9783527621194 Google Scholar
- Winton AL, Winton KB. 1945. The analysis of foods. John Wiley and Sons Inc. New York.
- Wu H. 2007. Isolation and characterization of natural products from ginger and Allium ursinum. ProQuest.
- Wu H, Chen M, Fan Y, Elsebaei F, Zhu Y. 2012. Determination of rutin and quercetin in Chinese herbal medicine by ionic liquid-based pressurized liquid extraction–liquid chromatography–chemiluminescence detection. Talanta 88: 222–9.
- Xiao W, Han L, Shi B. 2008. Microwave-assisted extraction of flavonoids from Radix astragali. Sep Purif Technol 62: 614–8.
- Xu J, Wang W, Liang H, Zhang Q, Li Q. 2015. Optimization of ionic liquid-based ultrasonic-assisted extraction of antioxidant compounds from Curcuma longa L. using response surface methodology. Ind Crops Prod 76: 487–93.
- Yamaguchi T, Kamezawa K, Iwaya K, Sato Y, Miyaji T, Bounoshita M, Tognarelli DJ, Saito M. 2011. Analysis of piperine in peppers using on-line SFE-UHPLC with photodiode array detection. Am Lab 43: 29–31.
- Yang Y-C, Lee S-G, Lee H-K, Kim M-K, Lee S-H, Lee H-S. 2002. A piperidine amide extracted from Piper longum L. fruit shows activity against Aedes aegypti mosquito larvae. J Agric Food Chem 50: 3765–7.
- Yang Y-C, Wei M-C, Huang T-C, Lee S-Z, Lin S-S. 2013. Comparison of modified ultrasound-assisted and traditional extraction methods for the extraction of baicalin and baicalein from Radix scutellariae. Ind Crops Prod 45: 182–90.
- Yang Y, Zhang F. 2008. Ultrasound-assisted extraction of rutin and quercetin from Euonymus alatus (Thunb.) Sieb. Ultrason Sonochem 15: 308–13.
- Yusuf M, Khan M, Khan RA, Ahmed B. 2013. Preparation, characterization, in vivo, and biochemical evaluation of brain targeted Piperine solid lipid nanoparticles in an experimentally induced Alzheimer's disease model. J Drug Targeting 21: 300–11.