{"id":"https://openalex.org/W4384702591","doi":"https://doi.org/10.17707/agricultforest.69.2.17","title":"EXTRACTION AND SPECTROPHOTOMETRIC QUANTIFICATION OF TOTAL POLYPHENOLIC CONTENT IN ONION","display_name":"EXTRACTION AND SPECTROPHOTOMETRIC QUANTIFICATION OF TOTAL POLYPHENOLIC CONTENT IN ONION","publication_year":2023,"publication_date":"2023-06-30","ids":{"openalex":"https://openalex.org/W4384702591","doi":"https://doi.org/10.17707/agricultforest.69.2.17"},"language":"en","primary_location":{"id":"doi:10.17707/agricultforest.69.2.17","doi":"https://doi.org/10.17707/agricultforest.69.2.17","is_oa":true,"landing_page_url":"http://dx.doi.org/10.17707/agricultforest.69.2.17","pdf_url":"http://www.agricultforest.ac.me/data/20230630-017 Jankulovska et al..pdf","source":{"id":"https://openalex.org/S2764498445","display_name":"The Journal Agriculture and Forestry","issn_l":"0554-5579","issn":["0554-5579","1800-9492"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj","norway-1","poland-20","russia-white-list-2"],"host_organization":"https://openalex.org/P4310314853","host_organization_name":"University of Montenegro","host_organization_lineage":["https://openalex.org/P4310314853"],"host_organization_lineage_names":["University of Montenegro"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal \"Agriculture and Forestry\"","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"http://www.agricultforest.ac.me/data/20230630-017 Jankulovska et al..pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5047044555","display_name":"Mirjana Stojan Jankulovska","orcid":"https://orcid.org/0000-0002-3581-558X","observed_orcids":["https://orcid.org/0000-0002-3581-558X"]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":true,"raw_author_name":"Mirjana S. JANKULOVSKA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003283934","display_name":"Viktorija Sokolovska","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Viktorija SOKOLOVSKA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084364168","display_name":"Lenche Velkoska-Markovska","orcid":"https://orcid.org/0000-0003-2896-4859","observed_orcids":["https://orcid.org/0000-0003-2896-4859"]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Lenche VELKOSKA-MARKOVSKA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5039134721","display_name":"Zvezda Bogevska","orcid":"https://orcid.org/0000-0001-6525-2143","observed_orcids":["https://orcid.org/0000-0001-6525-2143"]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Zvezda BOGEVSKA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066006248","display_name":"Ljubica Karakasova","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Ljubica KARAKASOVA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5093825479","display_name":"Silvana Manasievska","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Silvana MANASIEVSKA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5032522271","display_name":"Elizabeta T. Miskoska-Milevska","orcid":"https://orcid.org/0000-0001-7368-6355","observed_orcids":["https://orcid.org/0000-0001-7368-6355"]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Elizabeta MISKOVSKA-MILEVSKA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066730543","display_name":"Frosina Babanovska-Milenkovska","orcid":"https://orcid.org/0000-0001-5795-7645","observed_orcids":["https://orcid.org/0000-0001-5795-7645"]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Frosina BABANOVSKA-MILENKOVSKA","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5015245171","display_name":"Mile Markoski","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I76245029","display_name":"Ss. Cyril and Methodius University in Skopje","ror":"https://ror.org/02wk2vx54","country_code":"MK","type":"education","lineage":["https://openalex.org/I76245029"]}],"countries":["MK"],"is_corresponding":false,"raw_author_name":"Mile MARKOSKI","raw_affiliation_strings":["Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Methodius University in Skopje, Faculty of Agricultural Sciences and Food -Skopje, REPUBLIC OF NORTH MACEDONIA","institution_ids":["https://openalex.org/I76245029"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5047044555"],"corresponding_institution_ids":["https://openalex.org/I76245029"],"apc_list":null,"apc_paid":null,"fwci":0.4155,"has_fulltext":true,"cited_by_count":3,"citation_normalized_percentile":{"value":0.5464648,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":95},"biblio":{"volume":"69","issue":"2","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11979","display_name":"Garlic and Onion Studies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T11979","display_name":"Garlic and Onion Studies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1110","display_name":"Plant Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10035","display_name":"Phytochemicals and Antioxidant Activities","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/2704","display_name":"Biochemistry (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12181","display_name":"Agricultural and Biological Research","score":0.0,"subfield":{"id":"https://openalex.org/subfields/1106","display_name":"Food Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/allium-cepa","display_name":"onion","score":0.9660000205039978},{"id":"https://openalex.org/keywords/total-polyphenol-content","display_name":"total polyphenols","score":0.9639999866485596},{"id":"https://openalex.org/keywords/polyphenol-extraction","display_name":"polyphenol extraction","score":0.9210000038146973},{"id":"https://openalex.org/keywords/solvent-concentration","display_name":"solvent concentration","score":0.6990000009536743},{"id":"https://openalex.org/keywords/extraction-time","display_name":"extraction time","score":0.8870000243186951},{"id":"https://openalex.org/keywords/methanol-extraction","display_name":"methanol extraction","score":0.7739999890327454},{"id":"https://openalex.org/keywords/folin-ciocalteu-method","display_name":"Folin-Ciocalteu assay","score":0.9129999876022339},{"id":"https://openalex.org/keywords/gallic-acid-equivalent","display_name":"gallic acid equivalent","score":0.8579999804496765},{"id":"https://openalex.org/keywords/bioactive-compounds","display_name":"bioactive compounds","score":0.7179999947547913}],"concepts":[{"id":"https://openalex.org/C70899900","wikidata":"https://www.wikidata.org/wiki/Q290439","display_name":"Polyphenol","level":3,"score":0.8019485473632812},{"id":"https://openalex.org/C4725764","wikidata":"https://www.wikidata.org/wiki/Q844704","display_name":"Extraction (chemistry)","level":2,"score":0.6832137107849121},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.5649877190589905},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.42449772357940674},{"id":"https://openalex.org/C31903555","wikidata":"https://www.wikidata.org/wiki/Q1637030","display_name":"Food science","level":1,"score":0.39017266035079956},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.07000425457954407},{"id":"https://openalex.org/C2778004101","wikidata":"https://www.wikidata.org/wiki/Q133948","display_name":"Antioxidant","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.17707/agricultforest.69.2.17","doi":"https://doi.org/10.17707/agricultforest.69.2.17","is_oa":true,"landing_page_url":"http://dx.doi.org/10.17707/agricultforest.69.2.17","pdf_url":"http://www.agricultforest.ac.me/data/20230630-017 Jankulovska et al..pdf","source":{"id":"https://openalex.org/S2764498445","display_name":"The Journal Agriculture and Forestry","issn_l":"0554-5579","issn":["0554-5579","1800-9492"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj","norway-1","poland-20","russia-white-list-2"],"host_organization":"https://openalex.org/P4310314853","host_organization_name":"University of Montenegro","host_organization_lineage":["https://openalex.org/P4310314853"],"host_organization_lineage_names":["University of Montenegro"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal \"Agriculture and Forestry\"","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.17707/agricultforest.69.2.17","doi":"https://doi.org/10.17707/agricultforest.69.2.17","is_oa":true,"landing_page_url":"http://dx.doi.org/10.17707/agricultforest.69.2.17","pdf_url":"http://www.agricultforest.ac.me/data/20230630-017 Jankulovska et al..pdf","source":{"id":"https://openalex.org/S2764498445","display_name":"The Journal Agriculture and Forestry","issn_l":"0554-5579","issn":["0554-5579","1800-9492"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj","norway-1","poland-20","russia-white-list-2"],"host_organization":"https://openalex.org/P4310314853","host_organization_name":"University of Montenegro","host_organization_lineage":["https://openalex.org/P4310314853"],"host_organization_lineage_names":["University of Montenegro"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal \"Agriculture and Forestry\"","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4384702591.pdf","grobid_xml":"https://content.openalex.org/works/W4384702591.grobid-xml"},"referenced_works_count":34,"referenced_works":["https://openalex.org/W1522703327","https://openalex.org/W1921148038","https://openalex.org/W1930882493","https://openalex.org/W1965606785","https://openalex.org/W1968159677","https://openalex.org/W1984161480","https://openalex.org/W1992538565","https://openalex.org/W2019353069","https://openalex.org/W2053670834","https://openalex.org/W2055622101","https://openalex.org/W2059252149","https://openalex.org/W2064305556","https://openalex.org/W2075041427","https://openalex.org/W2076949891","https://openalex.org/W2079375243","https://openalex.org/W2090284277","https://openalex.org/W2117442264","https://openalex.org/W2125090965","https://openalex.org/W2128132737","https://openalex.org/W2148535774","https://openalex.org/W2478546029","https://openalex.org/W2624904230","https://openalex.org/W2740111822","https://openalex.org/W2890239906","https://openalex.org/W2902048820","https://openalex.org/W2955614803","https://openalex.org/W2966405964","https://openalex.org/W3121734311","https://openalex.org/W3146210544","https://openalex.org/W3169529886","https://openalex.org/W4205678149","https://openalex.org/W4225421692","https://openalex.org/W4287310474","https://openalex.org/W4321375749"],"related_works":["https://openalex.org/W4391370499","https://openalex.org/W4404942394","https://openalex.org/W7056528005","https://openalex.org/W2624904230","https://openalex.org/W1930882493","https://openalex.org/W2011066764","https://openalex.org/W3169893363","https://openalex.org/W2301508422","https://openalex.org/W3169529886","https://openalex.org/W4293077730"],"abstract_inverted_index":{"Consumption":[0],"of":[1,12,21,27,41,45,59,65,75,106,184,193],"food":[2],"rich":[3],"in":[4,35,47,70,97,126,156,169,187],"polyphenols":[5,46,107,186],"such":[6],"as":[7,119,135,142],"fruits":[8],"and":[9,86,88,95],"vegetables":[10],"is":[11,51,63],"great":[13],"importance,":[14],"because":[15],"it":[16],"contributes":[17],"to":[18,99],"the":[19,42,48,52,60,71,129,170,177,181],"prevention":[20],"various":[22,37,77],"diseases.Polyphenols":[23],"are":[24],"a":[25,136],"group":[26],"bioactive":[28],"compounds":[29],"which":[30,116],"can":[31],"play":[32],"significant":[33],"role":[34],"preventing":[36],"health":[38],"related":[39],"problems.One":[40],"richest":[43],"sources":[44],"human":[49],"diet":[50],"onion":[53,188],"(Allium":[54],"cepa":[55],"L.).The":[56],"main":[57],"objective":[58],"present":[61],"investigation":[62],"quantification":[64],"total":[66,164,185],"polyphenolic":[67,152,165],"content":[68,166,183],"(TPC)":[69],"Macedonian":[72],"local":[73],"population":[74],"onion.A":[76],"organic":[78],"solvents":[79],"were":[80,140],"tested":[81],"(methanol,":[82],"ethanol,":[83],"ethyl":[84,171],"acetate":[85,172],"acetone)":[87],"their":[89],"different":[90],"concentrations":[91],"(20,":[92],"40,":[93],"60":[94],"80%)":[96],"order":[98],"establish":[100],"optimum":[101],"solvent":[102],"concentration":[103],"for":[104,110,179],"extraction":[105,111,192],"from":[108],"onion.Time":[109],"was":[112,117,121,154,167,189],"another":[113],"important":[114],"parameter":[115],"examined":[118],"well.TPC":[120],"determined":[122,155],"by":[123],"UV-Vis":[124],"spectroscopy":[125],"accordance":[127],"with":[128],"Folin-Cioc\u00e2lteu":[130],"assay,":[131],"using":[132],"gallic":[133,144],"acid":[134,145],"reference":[137],"standard.The":[138],"results":[139],"expressed":[141],"mg":[143],"equivalents":[146],"GAE/100":[147,160,175,197],"g":[148],"fresh":[149],"onion.The":[150],"highest":[151,182],"level":[153],"60%":[157],"methanol":[158],"(38.81\u00b10.39mg":[159],"g),":[161],"while":[162],"lower":[163],"found":[168],"extracts":[173],"(27.10\u00b10.35mg":[174],"g).Regarding":[176],"time":[178],"extraction,":[180],"obtained":[190],"during":[191],"120":[194],"minutes":[195],"(37.95\u00b10.63mg":[196],"g).":[198]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2023-07-20T00:00:00"}