发表研究论文50多篇, 其中SCI论文30多篇, 以第一作者或通讯作者发表研究SCI论文20多篇。发表的研究论文被Journal of the American Chemistry Society， Natural Product Reports, Journal Medicinal Chemistry, Journal Organic Chemistry, European Journal of Organic Chemistry 等国际著名杂志引用，是多种SCI期刊(Organic Letters, Journal of Natural Products, Tetrahedron Letters, Fitoterapia, Journal of Brazilian Chemical Society, Phytochemistry Letters, Natural Products Research )的审稿人。
发表的主要研究论文：
Yi-Hong Zou, Liang Zhao, You-Kai Xu, Jing-Mei Bao, Xin Liu, Jun-Sheng Zhang, Wei Li, Abrar Ahmed, Sheng Yin, Gui-Hua Tang*..Anti-inflammatory sesquiterpenoids from the Traditional Chinese Medicine Salvia plebeia: Regulates pro-inflammatory mediators through inhibition of NF-κB and Erk1/2 signaling pathways in LPS-induced Raw264.7 cells. Journal of Ethnopharmacology.2018, 210, 95-106.
Cao DH，Liao SG，Yang L，Li XN，Wu B，Zhang P，Guo J，Xiao CF，Hu HB， Xu YK.* Trichiliasinenoids A-C,three 6,7 secomexicanolide limonoids with 7,29 linkage from Trichilia sinensis. Tetrahedron Letters, 2017,58,3283-3286.
Li,W,; Zhang,J.S; Huang, J.L.; Jiang, M.H.; Xu, Y.K.; Ahmed, H.; Yin, S.; Tang, G.H*. New prenylated coumatins from the stems of Toddalia asiatica.RSC Advances, 2017.7(49):31061-31068.
Fan, QF ; Zhang, HL ; Hu, HB; Xu YK; Song, QS.Quick method for separating target compounds from the bark of Maqian (Zanthoxylum myriacanthum var. pubescens) by high-performance countercurrent chromatography. Journal of Separation Sciences, 2016.39(20):4049-4052
Ji, K.L.; Gan, X.Q.; Li, X.F.; Guo,J.; Xu, Y.K.; Mahmoud, M.D. Zhang, P. Protective effect of the essential oil of Zanthoxylum myriacanthum var. pubescens against dextran sulfate sodium-induced experimental colitis in mice. Phytomedicine, 2016, 23, 883-890.
Cheng, L.; Ji, K.L; Liao,S.G.;Gan, L.S.; Yang, L.; Cao, D.H.; Liu, Y.Q.; Guo, J.; Zhang, P.; Lu, C.L.; Hu, H.B.; Xu, Y.K*. Diterpenoids and phenanthrenones from the leaves and stems of Strophioblachia fimbricalys.Tetrahedron Letters, 2016,57,2262-5.
Ji, K.L.; Li, X.N; Liao,S.G.; Hu,H.B.; Li,R.; Xu, Y.K*. Cytotoxic limonoids from the leaves of Walsura robusta. Phytochemistry Letters.2016,15, 53-56.
Liu, B.; Xu, Y.K.* Cytotoxicity and Synergistic Effect of the Constituents from Roots of Aglaia odorata (Meliaceae). Nat Prod. Res. 2016, 30，433-437
Ji, K.L.; Cao, D.H.; Li, X.F.; Guo J.; Zhang, P.; Xu, Y.K*. Two new limonoids from the roots of Trichilia connaroides with inhibitory activity on nitric oxide production in lipopolysaccharide-stimulated RAW 264.7 cells. Phytochemistry Letters.2015,14,234-238.
Ji, K.L.; Zhang, P.; Li, X.N.; Guo, J.; Hu, H. B.; Xiao, C.F.; Xie, X.Q.; Xu, Y.K.* Cytotoxic limonoids from the leaves of Trichilia americana. Phytochemistry, 2015. 118,61-67.
Xu, Y.K.*; Yang, L.; Liao, S.G.; Cai, P.; Wu, B.; Hu, H.B.; Guo,J.; Zhang, P. Koumine, Humantenine, and Yohimbane Alkaloids from Gelsemium elegans. J. Nat Prod. 2015, 78,1511-1517.
Yue, J. R.; Feng, D.Q.; Xu, Y.K.* A new triterpenoid bearing octacosanoate from the stems and roots of Clerodendrum philippinum var. simplex (Verbenaceae). Natural Product Research. 2015. 29, 1228-1234.
Li, R.; Hu, H. B.;, Li, X. F.; Zhang, P.; Xu, Y.K.; Yang, J. J.; Wang, Y.F. Essential oils composition and bioactivities of two species leaves used as packaging materials in Xishuangbanna, China. Food Control. 2015. 51. 9-14
Ji, K. L.; Zhang, P.; Hu, H. B.; Hua, S.; Liao, S. G.; Xu. Y. K*. Limonoids from the leaves and twigs of Walsura yunnanensis. J. Nat. Prod., 2014, 77, 1764-1769.
Ji, K. L.; Liao, S. G.; Zheng, X. L.; Na, Z.; Hu, H. B.; Zhang, P.; Xu, Y.K.* Limonoids from the fruits of Khaya ivorensis. Molecules, 2014.19, 3004-3011.
Liu, Q.; Xu, Y. K. *; Zhang, P. ; Na, Z.; Tang, T.; Shi, Y. X. Chemical properties and oxidative stability of Sacha Inchi (Plukentia volubilis L.) oil – an alternative source of plant–based omega–3 fatty acids. Grasas y Aceites, 2014, 65 (1): e012
Li, R.; Yang, J. J.; Shi, Y. X.; Zhao, M.; Ji, K. L.; Zhang, P.; Xu, Y. K.; Hu, H. B. Chemical composition, antimicrobial and anti-inflammatory activities of the essential oil from Maqian (Zanthoxylum myriacanthum var. pubescens) in Xishuangbanna, SW China. J. Ethnopharmacol., 158, Part A, 2014, 43–48.
Shi, Y. X.; Hu, H. B.; Xu, Y. K.; Liu, A. Z. An ethnobotanical study of the less known wild edible figs (genus Ficus) native to Xishuangbanna, southwest China. J. Ethnobiol. Ethnomed., 2014, 10:68
Fan, Q.F.; Na, Z.; Hu, H.B.; Xu, Y.K. Chemical Compounds from the Bark of Cratoxylum formosum ssp pruniflorum. Chem. Nat. Comp., 2014.50,1 137-138.
Zhang, M. J.; Liu, B.; Liao, S. G.; Xu Y.K.*, Feng, D. Q; Ji, K. L.; Li,Y. Uncarilic acid and secouncarilic acid, two new triterpenoids from Uucaria sessilifructus. Molecules, 2013,18, 9727-9734
Liu, B.; Yang, L.; Xu,Y. K.*; Liao, S. G.; Luo, H. R.; Na, Z. Two new triterpenoids from Gelsemium elegans and Aglaia odorata. Nat. Prod. Comm., 2013, 8 (10): 1373-1376.
Na, Z.; Hu, H. B.; Xu, Y. K. Cytotoxic caged xanthones from the fruit of Garcinia bracteata. Chem. Nat. Comp. 2013. 49, 505-506.
Tang, T.; Liao, S. G.; Na, Z. ; Li. Y. ; Xu, Y. K.* Dysoxylentin A, the first 21-nortriterpenoid bearing a 2-(propan-2-ylidenyl)furan-3(2H)-one, from Dysoxylum lenticellatum. Tetrahedron Lett., 2012, 53, 1183-1185.
Xu, Y. K*; Liao, S. G; Na, Z.; Hu, H. B.; Li,Y.; Luo, H. R.Gelsemium alkaloids, immunosuppressive agents from Gelsemium elegans. Fitoterapia, 2012, 83, 1120-1124.
Shi, Y. X.; Xu, Y.K.*；Hu, H. B.; Na, Z.; Wang, W. H. Preliminary assessment of antioxidant activity of young edible leaves of seven Ficus species in the ethnic diet in Xishuangbanna, southwest China. Food Chem., 2011,128, 889-894.
Liao, S. G.;Yang, S. P.;Yuan, T.; Zhang, C. R.; Chen, H. D.; Wu, Y.; Xu, Y. K.; Yue, J. M. Limonoids from the leaves and stems of Toona ciliate. J. Nat. Prod., 2007, 70(8):1268-1273.
Xu, Y. K.; Yang S. P; Liao, S.G.; Zhang, H.; Lin, L. P.; Ding, J.; Yue, J.M. Alkaloids from Gelsemium elegans. J. Nat. Prod., 2006, 69 (9):1347-1350.
Xu, Y. K.*; Tao, G. D.; Liu, H. M.; Yan, K. L.; Dao, X. S. Wild vegetable resources and market survey in Xishuangbanna, southwest China. Econ. Bot., 2004, 58(4): 647-667.
Liu H.M.; Xu, Z.F.; Xu, Y.K.; Wang, J.X. Practice of conserving plant diversity through traditional beliefs: a case study in Xishuangbanna, southwest China. Biodiversity and Conservation, 2002, 11, 705-713.
赵旻, 张萍, 李秀芬, 许又凯*.星油藤碱提蛋白和浓缩功能性质的比较研究.食品工业科技.2014, 35(11):103-106.
张茂娟，刘冰，安彦峰，冯德强，许又凯*.白钩藤的化学成分研究. 中草药, 2014,45(2):1750-180.
唐 霆，纳 智，许又凯*.皮孔葱臭木化学成分的研究.中草药 2012,43(1):38-42.
唐 霆，纳 智，许又凯*.茎花葱臭木化学成分的研究.天然产物研究与 2012,24(6):777-779.
唐 霆, 左来福, 纳 智, 许又凯*. 总序葱臭木茎干的化学成分研究.中国中药杂志2012,37(9):1237-1240.
纳 智,冯玉龙,许又凯. 飞机草地上部分化学成分研究. 中草药43(10):1896-19000.
范青飞,纳智,胡华斌,许又凯.金丝李茎皮化学成分研究.中草药2012,43(3):436-439.
纳 智，许又凯.双籽藤黄化学成分的研究.中草药 2010,41(3):367-370.
纳 智，许又凯.版纳藤黄枝叶的化学成分.中国中药杂志 2009,34(18):2338-2342.
楚冬海，许又凯*,高锦明,纳智.海巴戟总黄酮提取工艺的研究.西北林学院学报 2008，23(4): 160-162.
陈 剑，刘宏茂，许又凯，李秦晋，许再富.西双版纳傣族传统森林资源管理调查研究——以景洪市曼点村为例.安徽农业科学 2007,35(19):5844-5846,5856.
李秦晋，刘宏茂，许又凯，陈剑，许再富. 西双版纳傣族利用野生蔬菜种类变化及原因分析.云南植物研究2007, 29 (4): 467- 478.
李秦晋，刘宏茂，许又凯，陈剑，许再富. 西双版纳可食用竹笋资源研究. 云南大学学报( 自然科学版) 2007,29(S1):255-259.
方利英，刘宏茂，许又凯. 西双版纳几种食用藻的营养分析. 食品科学 2006，37(6):277-279.
许又凯,刘宏茂,肖春芬,吴兆录,刀祥生,蔡传涛. 六种食用榕树叶营养成分及作为木本蔬菜的评价. 武汉植物学研究2005, 23 (1):85-90.
李园,吴兆录,李丽莎,许又凯. 西双版纳外来植物的物种多样性、用途和生态危害的初步研究.植物资源与环境学报2006,15（2）：68-72.
许又凯,刘宏茂,刀祥生，肖春芬，吴兆录，蔡传涛.五种野生花卉营养成分及评价。营养学报2005,27（5）：437-439.
吴兆录，许又凯，蔡传涛，刘宏茂. 滇西北藏民（族）利用植物资源的实践和理念. 西南林学院学报 2005, 25（3）：18-21.
吴兆录，蔡传涛，许又凯，刘宏茂. 轮牧传统衰退：滇西北藏区亚高山草地退化的人文因素。云南地理环境研究2005,17（6）：1-4.
许又凯，刘宏茂，肖春芬，单于，吴兆录，刀详生，蔡传涛. 西双版纳野生蔬菜中硒含量测定. 云南植物研究2004,25（6）， 668-672.
许又凯，刘宏茂，刀祥生，肖春芬. 粉花羊蹄甲的营养成分及作为特色蔬菜的评价. 云南大学学报（自然科学版）2004,26(1):88-92.
许又凯，刘宏茂，刀祥生.臭菜营养成分分析及作为特色蔬菜的评价. 广西植物研究 2004, 24（1）:12-16.
出版专著
程必强，许又凯，马信祥. 热带植物引种驯化实践.武汉：武汉科技出版社，2018
许又凯，刘宏茂. 中国云南热带野生蔬菜. 北京:科学出版社，2002.
许再富，许又凯，刘宏茂. 热带雨林漫游与民族森林文化漫谈. 昆明: 云南科技出版.1998.
