{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T10:32:37Z","timestamp":1790073157847,"version":"4.0.1"},"reference-count":41,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2017,11,1]],"date-time":"2017-11-01T00:00:00Z","timestamp":1509494400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Program for Quality and Safety Risk Assessment of Agricultural Products of China","award":["GJFP2017003"],"award-info":[{"award-number":["GJFP2017003"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Phenolic acids are thought to be beneficial for human health and responsible for vegetables\u2019 health-promoting properties. Free, conjugated, and bound phenolic acids of seven commonly consumed vegetables, including kidney bean, cow pea, snow pea, hyacinth bean, green soy bean, soybean sprouts and daylily, from the regions of Beijing, Hangzhou, and Guangzhou, were identified and quantified by ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS\/MS). Three vegetables, namely green soy bean, soybean sprouts, and daylily (Hemerocallis fulva L.), from the Beijing region contained higher concentrations of total phenolic acids than those from the Hangzhou and Guangzhou regions. The results indicated that the phenolic acid content in the seven vegetables appeared to be species-dependent. The highest content of phenolic acids was found in daylily, followed by green soy bean, while the least amounts were identified in kidney bean and hyacinth bean. Typically, phenolic acids are predominantly found in conjugated forms. Principle component analysis (PCA) revealed some key compounds that differentiated the seven vegetables. Green soy bean, compared to the other six vegetables, was characterized by higher levels of syringic acid, ferulic acid, vanillic acid, and sinapic acid. Other compounds, particularly p-coumaric acid, neochlorogenic acid, and caffeic acid, exhibited significantly higher concentrations in daylily. In addition, p-coumaric acid was the characteristic substance in cow pea. Results from this study can contribute to the development of vegetables with specific phytochemicals and health benefits.<\/jats:p>","DOI":"10.3390\/molecules22111878","type":"journal-article","created":{"date-parts":[[2017,11,1]],"date-time":"2017-11-01T16:01:19Z","timestamp":1509552079000},"page":"1878","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":68,"title":["Characterization of Free, Conjugated, and Bound Phenolic Acids in Seven Commonly Consumed Vegetables"],"prefix":"10.3390","volume":"22","author":[{"given":"Yuan","family":"Gao","sequence":"first","affiliation":[{"name":"Beijing Research Center for Agricultural Standards and Testing, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"},{"name":"Risk Assessment Laboratory for Agro-products (Beijing), Ministry of Agriculture, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuai","family":"Ma","sequence":"additional","affiliation":[{"name":"Beijing Research Center for Agricultural Standards and Testing, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"},{"name":"Risk Assessment Laboratory for Agro-products (Beijing), Ministry of Agriculture, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9404-5570","authenticated-orcid":false,"given":"Meng","family":"Wang","sequence":"additional","affiliation":[{"name":"Beijing Research Center for Agricultural Standards and Testing, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"},{"name":"Risk Assessment Laboratory for Agro-products (Beijing), Ministry of Agriculture, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-Yuan","family":"Feng","sequence":"additional","affiliation":[{"name":"Beijing Research Center for Agricultural Standards and Testing, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"},{"name":"Risk Assessment Laboratory for Agro-products (Beijing), Ministry of Agriculture, No. 9 Middle Road of Shuguanghuayuan, Haidian Dist., Beijing 100097, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2017,11,1]]},"reference":[{"key":"ref_1","unstructured":"Hou, Y.Y. (2012). Study of Balance between Supply and Demand on Vegetable in China. [Ph.D. Thesis, Northwest A & F University]."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1016\/j.breast.2012.07.013","article-title":"Cruciferous vegetables intake is inversely associated with risk of breast cancer: A meta-analysis","volume":"22","author":"Liu","year":"2013","journal-title":"Breast"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"215S","DOI":"10.1093\/ajcn\/81.1.215S","article-title":"Polyphenols: Antioxidants and beyond","volume":"81","author":"Scalbert","year":"2005","journal-title":"Am. J. Clin. Nutr."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"159","DOI":"10.1016\/j.jff.2011.03.008","article-title":"Antiproliferative potential and DNA scission inhibitory activity of phenolics from whole millet grains","volume":"3","author":"Chandrasekara","year":"2011","journal-title":"J. Funct. Foods"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"176","DOI":"10.1111\/jhn.12058","article-title":"Dietary intake of polyphenols and major food sources in an institutionalised elderly population","volume":"27","author":"Gonzalez","year":"2014","journal-title":"J. Hum. Nutr. Diet."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"101","DOI":"10.1016\/j.foodchem.2016.01.063","article-title":"Improvement of the nutraceutical quality of broccoli sprouts by elicitation","volume":"201","author":"Natella","year":"2016","journal-title":"Food Chem."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Xi, Y., Jiao, W., Cao, J., and Jiang, W. (2017). Effects of chlorogenic acid on capacity of free radicals scavenging and proteomic changes in postharvest fruit of nectarine. PLoS ONE, 12.","DOI":"10.1371\/journal.pone.0182494"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1016\/j.postharvbio.2016.08.003","article-title":"Induced resistance to control postharvest decay of fruit and vegetables","volume":"122","author":"Romanazzi","year":"2016","journal-title":"Postharvest Biol. Technol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"513","DOI":"10.1002\/jsfa.7118","article-title":"Sensory characterization during repeated ingestion of small-molecular-weight phenolic acids","volume":"96","author":"Duizer","year":"2016","journal-title":"J. Sci. Food Agric."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"298","DOI":"10.1016\/j.foodchem.2015.03.100","article-title":"Characterization of free, conjugated and bound phenolics and lipophilic antioxidants in regular-and non-darkening cranberry beans (Phaseolus vulgaris L.)","volume":"185","author":"Chen","year":"2015","journal-title":"Food Chem."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Akyol, H., Riciputi, Y., Capanoglu, E., Caboni, M.F., and Verardo, V. (2016). Phenolic compounds in the potato and its byproducts: An overview. Int. J. Mol. Sci., 17.","DOI":"10.3390\/ijms17060835"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"986","DOI":"10.1016\/j.foodchem.2011.07.117","article-title":"Extraction conditions can greatly influence antioxidant capacity assays in plant food matrices","volume":"130","author":"Michiels","year":"2012","journal-title":"Food Chem."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"18464","DOI":"10.3390\/molecules201018464","article-title":"Breeding vegetables with increased content in bioactive phenolic acids","volume":"20","author":"Kaushik","year":"2015","journal-title":"Molecules"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"10504","DOI":"10.1021\/jf503338m","article-title":"Grafting influences phenolic profile and carpometric traits of fruits of greenhouse-grown eggplant (Solanum melongena L.)","volume":"62","year":"2014","journal-title":"J. Agric. Food Chem."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"4142","DOI":"10.1021\/jf9001044","article-title":"Antioxidant phytochemicals and antioxidant capacity of biofortified carrots (Daucus carota L.) of various colors","volume":"57","author":"Sun","year":"2009","journal-title":"J. Agric. Food Chem."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"6772","DOI":"10.1021\/acs.jafc.5b02086","article-title":"Accumulation of phenylpropanoids by white, blue, and red light irradiation and their organ-specific distribution in Chinese cabbage (Brassica rapa ssp. pekinensis)","volume":"63","author":"Kim","year":"2015","journal-title":"J. Agric. Food Chem."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"612","DOI":"10.1016\/j.foodchem.2015.12.066","article-title":"Antioxidant capacities and polyphenolics of Chinese cabbage (Brassica rapa L. ssp. pekinensis) leaves","volume":"199","author":"Seong","year":"2016","journal-title":"Food Chem."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1007\/s10068-012-0003-7","article-title":"Roasting enhances antioxidant effect of bitter melon (Momordica charantia L.) increasing in flavan-3-ol and phenolic acid contents","volume":"21","author":"Choi","year":"2012","journal-title":"Food Sci. Biotechnol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"74","DOI":"10.1590\/S0102-053620160000100011","article-title":"Antioxidant characterization of different Italian broccoli landraces","volume":"34","author":"Nicoletto","year":"2016","journal-title":"Hortic. Bras."},{"key":"ref_20","first-page":"217","article-title":"Legumes: The most important dietary predictor of survival in older people of different ethnicities","volume":"13","author":"Wahlqvist","year":"2004","journal-title":"Asia Pac. J. Clin. Nutr."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"216","DOI":"10.1016\/j.foodchem.2014.04.004","article-title":"In vitro anti-inflammatory activity of phenolic rich extracts from white and red common beans","volume":"161","author":"Moro","year":"2014","journal-title":"Food Chem."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"464","DOI":"10.1016\/j.ifset.2010.02.001","article-title":"Bioactive substance contents and antioxidant capacity of raw and blanched vegetables","volume":"11","author":"Wen","year":"2010","journal-title":"Innov. Food Sci. Emerg."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1680","DOI":"10.1021\/jf0527448","article-title":"Evaluation of antioxidant activity and inhibitory effect on nitric oxide production of some common vegetables","volume":"54","author":"Bor","year":"2006","journal-title":"J. Agric. Food Chem."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1016\/S0308-8146(02)00185-1","article-title":"Free, esterified, and insoluble-bound phenolic acids in white and red Korean ginsengs (Panax ginseng CA Meyer)","volume":"79","author":"Jung","year":"2002","journal-title":"Food Chem."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2866","DOI":"10.1021\/jf026182t","article-title":"Phenolic acids in foods: An overview of analytical methodology","volume":"51","author":"Robbins","year":"2003","journal-title":"J. Agric. Food Chem."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"615","DOI":"10.1016\/j.foodchem.2009.04.055","article-title":"Antioxidant potential of barley as affected by alkaline hydrolysis and release of insoluble-bound phenolics","volume":"117","author":"Madhujith","year":"2009","journal-title":"Food Chem."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"2236","DOI":"10.1248\/bpb.29.2236","article-title":"Evaluation of the anti-inflammatory, analgesic and antipyretic activities of the natural polyphenol chlorogenic acid","volume":"29","author":"Almeida","year":"2006","journal-title":"Biol. Pharm. Bull."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1016\/j.ijpharm.2010.09.035","article-title":"In vitro and in vivo antioxidant properties of chlorogenic acid and caffeic acid","volume":"403","author":"Sato","year":"2011","journal-title":"Int. J. Pharmaceut."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"823","DOI":"10.1007\/s10681-015-1415-2","article-title":"Genotype \u00d7 environment interactions in eggplant for fruit phenolic acid content","volume":"205","author":"Stommel","year":"2015","journal-title":"Euphytica"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"5413","DOI":"10.1021\/acs.jafc.7b01409","article-title":"Characterization of phenolic compounds from early and late ripening sweet cherries and their antioxidant and antifungal activities","volume":"65","author":"Wang","year":"2017","journal-title":"J. Agric. Food Chem."},{"key":"ref_31","first-page":"43","article-title":"Dietary fiber as a carrier of dietary antioxidants: An essential physiological function","volume":"59","year":"2010","journal-title":"J. Agric. Food Chem."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1016\/j.foodres.2015.05.036","article-title":"Impact of the industrial freezing process on selected vegetables\u2013Part II. Colour and bioactive compounds","volume":"75","author":"Mazzeo","year":"2015","journal-title":"Food Res. Int."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1016\/j.jfca.2005.09.003","article-title":"Phenolic acids content of fifteen dry edible bean (Phaseolus vulgaris L.) varieties","volume":"19","author":"Luthria","year":"2006","journal-title":"J. Food Compos. Anal."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"607","DOI":"10.1021\/jf052334j","article-title":"Determination of total content of phenolic compounds and their antioxidant activity in vegetables evaluation of spectrophotometric methods","volume":"54","author":"Stratil","year":"2006","journal-title":"J. Agric. Food Chem."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.foodres.2012.10.025","article-title":"Glycine max (L.) Merr., Vigna radiata L. and Medicago sativa L. sprouts: A natural source of bioactive compounds","volume":"50","author":"Silva","year":"2013","journal-title":"Food Res. Int."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"517","DOI":"10.1016\/S0963-9969(00)00086-7","article-title":"Content of flavonols and selected phenolic acids in strawberries and Vaccinium species: Influence of cultivar, cultivation site and technique","volume":"33","year":"2000","journal-title":"Food Res. Int."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"330","DOI":"10.1021\/jf062517l","article-title":"Effect of heat treatment on the phenolic compounds and antioxidant capacity of citrus peel extract","volume":"55","author":"Xu","year":"2007","journal-title":"J. Agric. Food Chem."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"4436","DOI":"10.1021\/jf060185e","article-title":"Polyphenols in wild and weedy Mexican common beans (Phaseolus vulgaris L.)","volume":"54","author":"Lygin","year":"2006","journal-title":"J. Agric. Food Chem."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"4754","DOI":"10.1021\/jf900695s","article-title":"Total phenolic, phenolic acid, anthocyanin, flavan-3-ol, and flavonol profiles and antioxidant properties of pinto and black beans (Phaseolus vulgaris L.) as affected by thermal processing","volume":"57","author":"Xu","year":"2009","journal-title":"J. Agric. Food Chem."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1549","DOI":"10.1017\/S0007114513004352","article-title":"Cooked navy and black bean diets improve biomarkers of colon health and reduce inflammation during colitis","volume":"111","author":"Zhang","year":"2014","journal-title":"Br. J. Nutr."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"9732","DOI":"10.1021\/jf801069s","article-title":"Phenolic acids in wheat varieties in the HEALTHGRAIN diversity screen","volume":"56","author":"Li","year":"2008","journal-title":"J. Agric. Food Chem."}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/22\/11\/1878\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T18:49:09Z","timestamp":1760208549000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/22\/11\/1878"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,11,1]]},"references-count":41,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2017,11]]}},"alternative-id":["molecules22111878"],"URL":"https:\/\/doi.org\/10.3390\/molecules22111878","relation":{},"ISSN":["1420-3049"],"issn-type":[{"value":"1420-3049","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,11,1]]}}}