{"id":"https://openalex.org/W2012345259","doi":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","title":"Comparison of Classical Ion Exchange Amino Acid Analysis and o-Phthaldialdehyde Methods to Characterize Proteolysis by Lactobacillus bulgaricus","display_name":"Comparison of Classical Ion Exchange Amino Acid Analysis and o-Phthaldialdehyde Methods to Characterize Proteolysis by Lactobacillus bulgaricus","publication_year":1989,"publication_date":"1989-11-01","ids":{"openalex":"https://openalex.org/W2012345259","doi":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","mag":"2012345259"},"language":"en","primary_location":{"id":"doi:10.3168/jds.s0022-0302(89)79437-6","doi":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","is_oa":true,"landing_page_url":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","pdf_url":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","source":{"id":"https://openalex.org/S28349394","display_name":"Journal of Dairy Science","issn_l":"0022-0302","issn":["0022-0302","1525-3198","1529-9066"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-3","ki-jl-1","medline","norway-2","oarl","poland-200","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Dairy Science","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"bronze","oa_url":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5087020653","display_name":"Bart C. Weimer","orcid":"https://orcid.org/0000-0002-7471-1978","observed_orcids":["https://orcid.org/0000-0002-7471-1978"]},"institutions":[{"id":"https://openalex.org/I121980950","display_name":"Utah State University","ror":"https://ror.org/00h6set76","country_code":"US","type":"education","lineage":["https://openalex.org/I121980950"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"B.C. Weimer","raw_affiliation_strings":["Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700","institution_ids":["https://openalex.org/I121980950"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5061809177","display_name":"Craig J. Oberg","orcid":"https://orcid.org/0000-0001-6033-7033","observed_orcids":["https://orcid.org/0000-0001-6033-7033"]},"institutions":[{"id":"https://openalex.org/I121980950","display_name":"Utah State University","ror":"https://ror.org/00h6set76","country_code":"US","type":"education","lineage":["https://openalex.org/I121980950"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"C.J. Oberg","raw_affiliation_strings":["Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700","institution_ids":["https://openalex.org/I121980950"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021839858","display_name":"Lynn V. Moyes","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I121980950","display_name":"Utah State University","ror":"https://ror.org/00h6set76","country_code":"US","type":"education","lineage":["https://openalex.org/I121980950"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"L.V. Moyes","raw_affiliation_strings":["Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700","institution_ids":["https://openalex.org/I121980950"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050539651","display_name":"R. J. Brown","orcid":"https://orcid.org/0000-0001-8093-9779","observed_orcids":["https://orcid.org/0000-0001-8093-9779"]},"institutions":[{"id":"https://openalex.org/I121980950","display_name":"Utah State University","ror":"https://ror.org/00h6set76","country_code":"US","type":"education","lineage":["https://openalex.org/I121980950"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"R.J. Brown","raw_affiliation_strings":["Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700","institution_ids":["https://openalex.org/I121980950"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5112759817","display_name":"Gary H. Richardson","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I121980950","display_name":"Utah State University","ror":"https://ror.org/00h6set76","country_code":"US","type":"education","lineage":["https://openalex.org/I121980950"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"G.H. Richardson","raw_affiliation_strings":["Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Nutrition and Food Sciences, Utah State University, Logan 84322-8700","institution_ids":["https://openalex.org/I121980950"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I121980950"],"apc_list":{"value":3500,"currency":"USD","value_usd":3500},"apc_paid":null,"fwci":0.6211,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":{"value":0.6493022,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"72","issue":"11","first_page":"2873","last_page":"2876"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10141","display_name":"Probiotics and Fermented Foods","score":0.9775000214576721,"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"}},"topics":[{"id":"https://openalex.org/T10141","display_name":"Probiotics and Fermented Foods","score":0.9775000214576721,"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"}},{"id":"https://openalex.org/T14127","display_name":"Food Nutrient Composition and Product Development","score":0.012600000016391277,"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"}},{"id":"https://openalex.org/T11561","display_name":"Protein Hydrolysis and Bioactive Peptides","score":0.002199999988079071,"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/lactobacillus-delbrueckii-subsp-bulgaricus","display_name":"Lactobacillus bulgaricus","score":0.9990000128746033},{"id":"https://openalex.org/keywords/proteolysis","display_name":"proteolysis","score":0.9599999785423279},{"id":"https://openalex.org/keywords/o-phthalaldehyde","display_name":"o-phthalaldehyde","score":0.8489999771118164},{"id":"https://openalex.org/keywords/proteolytic-activity","display_name":"proteolytic activity","score":0.7860000133514404},{"id":"https://openalex.org/keywords/dairy-starter-cultures","display_name":"dairy starter cultures","score":0.6330000162124634},{"id":"https://openalex.org/keywords/method-comparison","display_name":"method comparison","score":0.6620000004768372},{"id":"https://openalex.org/keywords/amino-acid-composition","display_name":"amino acid composition","score":0.5699999928474426}],"concepts":[{"id":"https://openalex.org/C2781307694","wikidata":"https://www.wikidata.org/wiki/Q33123","display_name":"Proteolysis","level":3,"score":0.8815252780914307},{"id":"https://openalex.org/C2780206646","wikidata":"https://www.wikidata.org/wiki/Q1061596","display_name":"Lactobacillus","level":3,"score":0.6247658133506775},{"id":"https://openalex.org/C2778682546","wikidata":"https://www.wikidata.org/wiki/Q262677","display_name":"Lactobacillus delbrueckii subsp. bulgaricus","level":5,"score":0.5327745676040649},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.5277289152145386},{"id":"https://openalex.org/C2780437316","wikidata":"https://www.wikidata.org/wiki/Q578677","display_name":"Lactobacillaceae","level":4,"score":0.4687599837779999},{"id":"https://openalex.org/C515207424","wikidata":"https://www.wikidata.org/wiki/Q8066","display_name":"Amino acid","level":2,"score":0.4406385123729706},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.43442100286483765},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.36483460664749146},{"id":"https://openalex.org/C100544194","wikidata":"https://www.wikidata.org/wiki/Q41760","display_name":"Fermentation","level":2,"score":0.07118022441864014},{"id":"https://openalex.org/C181199279","wikidata":"https://www.wikidata.org/wiki/Q8047","display_name":"Enzyme","level":2,"score":0.05820837616920471}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.3168/jds.s0022-0302(89)79437-6","doi":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","is_oa":true,"landing_page_url":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","pdf_url":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","source":{"id":"https://openalex.org/S28349394","display_name":"Journal of Dairy Science","issn_l":"0022-0302","issn":["0022-0302","1525-3198","1529-9066"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-3","ki-jl-1","medline","norway-2","oarl","poland-200","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Dairy Science","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.3168/jds.s0022-0302(89)79437-6","doi":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","is_oa":true,"landing_page_url":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","pdf_url":"https://doi.org/10.3168/jds.s0022-0302(89)79437-6","source":{"id":"https://openalex.org/S28349394","display_name":"Journal of Dairy Science","issn_l":"0022-0302","issn":["0022-0302","1525-3198","1529-9066"],"is_oa":false,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","dongbi-a","jufo-3","ki-jl-1","medline","norway-2","oarl","poland-200","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Dairy Science","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/W2012345259.pdf","grobid_xml":"https://content.openalex.org/works/W2012345259.grobid-xml"},"referenced_works_count":21,"referenced_works":["https://openalex.org/W133554238","https://openalex.org/W155559340","https://openalex.org/W291911162","https://openalex.org/W979425508","https://openalex.org/W1491054511","https://openalex.org/W1971433327","https://openalex.org/W1975630793","https://openalex.org/W2018400133","https://openalex.org/W2039546357","https://openalex.org/W2059131368","https://openalex.org/W2071744762","https://openalex.org/W2084903241","https://openalex.org/W2086823580","https://openalex.org/W2087486250","https://openalex.org/W2098087792","https://openalex.org/W2117729182","https://openalex.org/W2139325759","https://openalex.org/W2262616897","https://openalex.org/W2557909140","https://openalex.org/W2559683199","https://openalex.org/W3204916388"],"related_works":["https://openalex.org/W1976201611","https://openalex.org/W1975630793","https://openalex.org/W143461739","https://openalex.org/W2035395015","https://openalex.org/W2011663425","https://openalex.org/W2141722050","https://openalex.org/W7139104043","https://openalex.org/W2489107399","https://openalex.org/W2806172949","https://openalex.org/W1501184174"],"abstract_inverted_index":{"Seven":[0],"strains":[1,19],"of":[2,26,32,55],"Lactobacillus":[3],"bulgaricus":[4],"were":[5,20,44],"assayed":[6],"for":[7,40,59,65,75],"proteolytic":[8],"activity":[9],"using":[10],"o-phthaldialdehyde":[11,47],"and":[12,34,42,63],"classical":[13],"ion":[14],"exchange":[15],"amino":[16,36,60,72,80],"acid":[17,37,61,73,81],"analysis.The":[18],"ranked":[21],"in":[22],"the":[23],"same":[24],"order":[25],"proteolysis":[27],"by":[28],"both":[29],"methods.Linear":[30],"regressions":[31],"total":[33],"individual":[35],"concentrations,":[38],"except":[39],"alanine":[41],"glycine,":[43],"correlated":[45],"with":[46],"results":[48],"(R":[49],"2":[50],"=":[51],".95).The":[52],"mean":[53],"coefficient":[54],"variation":[56],"was":[57,69],"7.3%":[58],"analyses":[62],"10.2%":[64],"o-phthaldialdehyde.The":[66],"ophthaldialdehyde":[67],"method":[68],"comparable":[70],"to":[71],"analysis":[74,82],"measuring":[76],"gross":[77],"proteolysis,":[78],"but":[79],"provides":[83],"additional":[84],"information.":[85]},"counts_by_year":[],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}
