ABSTRACT: 
                        Citrus limonoids (CLs) are a group of highly oxygenated terpenoid found mostly in the seeds, fruits and peel tissues of citrus fruits such as lemons, limes, pumellos, oranges, grapefruits, bergamots, and mandarins. [10] The term limonoids was derived from limonin, which is the first tetranortriterpenoid obtained from bitter principles of citrus [6]. CLs are found as both free aglycones and corresponding -D glucosides, the former mostly occurring in seeds while the latter are formed during fruit maturation. Conversion of agycon to glycon is carried out by two enzymes, uridine diphosphoglucose- limonoid glycosyl t ransferase and limonoid D-ring lactone hydrolase. [8,9]. Glucosides have an open D ring to accommodate an attached glucose moiety; in aglycones the D-ring is closed [9] Citrus fruits are particularly high in a class of phytochemicals known as the limonoids1and recent research suggests that limonoids appearto possess substantial anticancer activity. [7] The present review focused on pharmacological studies of citrus limonoids as an anticancer agent.
                    
                    
                    
                 
				
				
                    
                    
                        Cite this article:
                        
                        Neha O. Mankar, Yogita R. Mandlik, Chandrashekhar B. Chauriya. Limonoids as an effective Anticancer Agent: A Review. Research Journal of Pharmaceutical Dosage Forms and Technology. 2021; 13(2):118-0. doi: 10.52711/0975-4377.2021.00021
						
						 Cite(Electronic):
						 
						 Neha O. Mankar, Yogita R. Mandlik, Chandrashekhar B. Chauriya. Limonoids as an effective Anticancer Agent: A Review. Research Journal of Pharmaceutical Dosage Forms and Technology. 2021; 13(2):118-0. doi: 10.52711/0975-4377.2021.00021   Available on: https://www.rjpdft.com/AbstractView.aspx?PID=2021-13-2-6
                    
					
				 				
					
				         
				REFERENCES:
1.	Hasegawa S, Fong C, Herman Z, and Miyak M. Publication Date: M 1992, Glucosides of limonoids doi: 10.1021/bk-1992-0490.ch00
2.	Miller E, Taylor S, Berry C, Zimmerman J, and Hasegawa S.; 2000, Citrus Limonoids: Increasing Importance as Anticancer Agents, : doi: 10.1021/bk-2000-0758.ch010
3.	Jacob R, Hasegawa S and Manners G.; 2000 The Potential of Citrus Limonoids as Anticancer Agents Perishables Handling Quarterly Issue No. 102
4.	Miller E, Porter J, Binnie W, Guo I, and Hasegawa S.; 2004, Further Studies on the Anticancer Activity of Citrus Limonoids, J. Agric. Food Chem., 52, 4908−4912
5.	Poulose S, Harris E, and Patil B.; 2005, Citrus Limonoids Induce Apoptosis in Human Neuroblastoma Cells and Have Radical Scavenging Activity, J. Nutr. 135: 870–877, 
6.	Roy A. and Saraf S.; 2006 Limonoids: Overview of Significant Bioactive Triterpenes Distributed in Plants Kingdom Biol. Pharm. Bull. 29(2) 191—201 
7.	Ejaz S, Ejaz A, Matsuda k and Chae Woong Lim.; 2006 Limonoids as cancer chemopreventive agents Sci Food Agric 86:339–345, DOI: 10.1002/jsfa.2396
8.	Poulose S, Harris E, & Patil B.; 2009, Antiproliferative Effects of Citrus Limonoids Against Human Neuroblastoma and Colonic Adenocarcinoma Cells, Nutrition and Cancer, 56:1, 103-112, DOI: 10.1207/s15327914nc5601_14
9.	Gyawali R and Kim K..; 2014, Anticancer Phytochemicals of Citrus Fruits –A Review, DOI Number 10.5958/2277-940X..00079.5
10.	Gualdani R, Cavalluzzi M, Lentini G, Habtemariam S.; 2016. The Chemistry and Pharmacology of Citrus Limonoids, DOI: 10.3390/molecules21111530
11.	Gualdani R, Cavalluzzi M, Lentini G.; 2016 The Chemistry and Pharmacology of Citrus Limonoids 2016 Molecules, 21, 1530, 8 of 39
12.	Patel M, Tripathy S, Mukhopadhyay K, Wangjam T, Cabang A, Morris J, and Wargovich M.; 2018, A Supercritical CO2 Extract of Neem Leaf (A. indica) and its Bioactive Liminoid, Nimbolide, Suppresses Colon Cancer in Preclinical Models by Modulating Pro-inflammatory Pathways DOI 10.1002/mc.22832
13.	Sophia J, Kowshik J and Nagini S.; 2018, Nimbolide, a neem limonoid inhibits cytoprotective autophagy to activate apoptosis via modulation of the PI3K/Akt/GSK-3β signalling pathway in oral cancer, Cell Death & Disease volume 9, Article number: 1087 
14.	Patra A, Satpathy S, and Hussain M.; 2019 Nanodelivery and anticancer effect of a limonoid, nimbolide, in breast and pancreatic cancer cells Int J Nanomedicine.; 14: 8095–8104
15.	United state patent 29 may 2001 patent no.US 6, 239, 114, B1