Class information for:
Level 1: THEOBROMINE//CAFFEINE DETERMINATION//CAFFEINE

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
18665 541 28.0 57%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
3 4 PLANT SCIENCES//AGRONOMY//FOOD SCIENCE & TECHNOLOGY 1882812
527 3       CAFFEINE//COFFEE//GREEN TEA 20032
1588 2             CAFFEINE//ENERGY DRINKS//COFFEE 7204
18665 1                   THEOBROMINE//CAFFEINE DETERMINATION//CAFFEINE 541

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 THEOBROMINE authKW 327622 6% 17% 35
2 CAFFEINE DETERMINATION authKW 253983 1% 75% 6
3 CAFFEINE authKW 242062 28% 3% 154
4 THEOPHYLLINE authKW 228408 16% 5% 87
5 THEOPHYLLINE OXIDASE authKW 126991 1% 75% 3
6 4 AMINO 3 HYDROXYNAPHTHALENE SULFONIC ACID authKW 112883 0% 100% 2
7 CAFFEINE MONITORING authKW 112883 0% 100% 2
8 INTEGRATED ABSORPTION COEFFICIENT authKW 112883 0% 100% 2
9 LARGE PHASE RATIO authKW 112883 0% 100% 2
10 1 3 7 TRIMETHYLURIC ACID authKW 84659 1% 50% 3

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Chemistry, Analytical 8296 53% 0% 285
2 Medical Laboratory Technology 1547 9% 0% 49
3 Biochemical Research Methods 1221 16% 0% 89
4 Food Science & Technology 752 14% 0% 78
5 Electrochemistry 334 7% 0% 39
6 Chemistry, Applied 216 7% 0% 36
7 Pharmacology & Pharmacy 165 13% 0% 68
8 Nutrition & Dietetics 125 5% 0% 25
9 Spectroscopy 66 4% 0% 20
10 Toxicology 65 4% 0% 22

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 RHEUMATOALLERGOL 75254 0% 67% 2
2 181 1CHOME 56441 0% 100% 1
3 AREA AMBIENTALE AGROCLIMENTARE 56441 0% 100% 1
4 CATEDRA FIZIOPATOL 56441 0% 100% 1
5 CHAIR PHARMACOKINET BIOPHARMACEUT 56441 0% 100% 1
6 CONTROL CAL MED 56441 0% 100% 1
7 DIPARTIMENTO STUDI RISORE IMP A AMBEINTE METO 56441 0% 100% 1
8 EDIFICI JERONI MUNOIZ 56441 0% 100% 1
9 HEART PUAI HOSP 56441 0% 100% 1
10 JABBER IBN HAYAN S 56441 0% 100% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 THERAPEUTIC DRUG MONITORING 4345 3% 0% 17
2 JOURNAL OF CHROMATOGRAPHY 3113 6% 0% 32
3 ELELMEZESI IPAR 2969 0% 5% 1
4 JOURNAL OF LIQUID CHROMATOGRAPHY 2676 2% 0% 13
5 JOURNAL OF CHROMATOGRAPHY-BIOMEDICAL APPLICATIONS 2251 2% 0% 12
6 ANNALES PHARMACEUTIQUES FRANCAISES 1543 1% 1% 3
7 JOURNAL OF THE FOOD HYGIENIC SOCIETY OF JAPAN 1410 1% 0% 6
8 BIOMEDICAL CHROMATOGRAPHY 1286 2% 0% 9
9 JOURNAL OF ANALYTICAL CHEMISTRY 1241 2% 0% 10
10 ANALYTICAL LETTERS 1201 2% 0% 12

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 THEOBROMINE 327622 6% 17% 35 Search THEOBROMINE Search THEOBROMINE
2 CAFFEINE DETERMINATION 253983 1% 75% 6 Search CAFFEINE+DETERMINATION Search CAFFEINE+DETERMINATION
3 CAFFEINE 242062 28% 3% 154 Search CAFFEINE Search CAFFEINE
4 THEOPHYLLINE 228408 16% 5% 87 Search THEOPHYLLINE Search THEOPHYLLINE
5 THEOPHYLLINE OXIDASE 126991 1% 75% 3 Search THEOPHYLLINE+OXIDASE Search THEOPHYLLINE+OXIDASE
6 4 AMINO 3 HYDROXYNAPHTHALENE SULFONIC ACID 112883 0% 100% 2 Search 4+AMINO+3+HYDROXYNAPHTHALENE+SULFONIC+ACID Search 4+AMINO+3+HYDROXYNAPHTHALENE+SULFONIC+ACID
7 CAFFEINE MONITORING 112883 0% 100% 2 Search CAFFEINE+MONITORING Search CAFFEINE+MONITORING
8 INTEGRATED ABSORPTION COEFFICIENT 112883 0% 100% 2 Search INTEGRATED+ABSORPTION+COEFFICIENT Search INTEGRATED+ABSORPTION+COEFFICIENT
9 LARGE PHASE RATIO 112883 0% 100% 2 Search LARGE+PHASE+RATIO Search LARGE+PHASE+RATIO
10 1 3 7 TRIMETHYLURIC ACID 84659 1% 50% 3 Search 1+3+7+TRIMETHYLURIC+ACID Search 1+3+7+TRIMETHYLURIC+ACID

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 ANDREEVA, EY , DMITRIENKO, SG , ZOLOTOV, YA , (2012) METHYLXANTHINES: PROPERTIES AND DETERMINATION IN VARIOUS OBJECTS.RUSSIAN CHEMICAL REVIEWS. VOL. 81. ISSUE 5. P. 397 -414 80 24% 3
2 DE ARAUJO, DM , BRITO, CD , DE OLIVEIRA, SDS , DA SILVA, DR , MARTINEZ-HUITLE, CA , ARAGAO, CFS , (2014) PLATINUM SENSOR FOR QUANTIFYING CAFFEINE IN DRUG FORMULATIONS.CURRENT PHARMACEUTICAL ANALYSIS. VOL. 10. ISSUE 4. P. 231 -238 26 70% 1
3 FILIK, H , AVAN, AA , MUMIN, Y , (2017) SIMULTANEOUS ELECTROCHEMICAL DETERMINATION OF CAFFEINE AND VANILLIN BY USING POLY(ALIZARIN RED S) MODIFIED GLASSY CARBON ELECTRODE.FOOD ANALYTICAL METHODS. VOL. 10. ISSUE 1. P. 31 -40 23 44% 1
4 SVORC, L , (2013) DETERMINATION OF CAFFEINE: A COMPREHENSIVE REVIEW ON ELECTROCHEMICAL METHODS.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE. VOL. 8. ISSUE 4. P. 5755-5773 38 35% 28
5 BRUNETTO, MDR , GUTIERREZ, L , DELGADO, Y , GALLIGNANI, M , ZAMBRANO, A , GOMEZ, A , RAMOS, G , ROMERO, C , (2007) DETERMINATION OF THEOBROMINE, THEOPHYLLINE AND CAFFEINE IN COCOA SAMPLES BY A HIGH-PERFORMANCE LIQUID CHROMATOGRAPHIC METHOD WITH ON-LINE SAMPLE CLEANUP IN A SWITCHING-COLUMN SYSTEM.FOOD CHEMISTRY. VOL. 100. ISSUE 2. P. 459-467 17 81% 59
6 CINKOVA, K , ZBOJEKOVA, N , VOJS, M , MARTON, M , SAMPHAO, A , SVORC, L , (2015) ELECTROANALYTICAL APPLICATION OF A BORON-DOPED DIAMOND ELECTRODE FOR SENSITIVE VOLTAMMETRIC DETERMINATION OF THEOPHYLLINE IN PHARMACEUTICAL DOSAGES AND HUMAN URINE.ANALYTICAL METHODS. VOL. 7. ISSUE 16. P. 6755 -6763 22 51% 2
7 TZANAVARAS, PD , ZACHARIS, CK , THEMELIS, DG , (2010) RAPID DETERMINATION OF METHYLXANTHINES IN REAL SAMPLES BY HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY USING THE NEW FASTGRADIENT (R) NARROW-BORE MONOLITHIC COLUMN.TALANTA. VOL. 81. ISSUE 4-5. P. 1494-1501 19 66% 14
8 GEORGA, KA , SAMANIDOU, VF , PAPADOYANNIS, IN , (2001) USE OF NOVEL SOLID-PHASE EXTRACTION SORBENT MATERIALS FOR HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY QUANTITATION OF CAFFEINE METABOLISM PRODUCTS METHYLXANTHINES AND METHYLURIC ACIDS IN SAMPLES OF BIOLOGICAL ORIGIN.JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES. VOL. 759. ISSUE 2. P. 209 -218 18 82% 47
9 HABIBI, B , ABAZARI, M , POURNAGHI-AZAR, MH , (2012) A CARBON NANOTUBE MODIFIED ELECTRODE FOR DETERMINATION OF CAFFEINE BY DIFFERENTIAL PULSE VOLTAMMETRY.CHINESE JOURNAL OF CATALYSIS. VOL. 33. ISSUE 11. P. 1783-1790 20 53% 19
10 GAO, YY , WANG, H , GUO, LP , (2013) SIMULTANEOUS DETERMINATION OF THEOPHYLLINE AND CAFFEINE BY LARGE MESOPOROUS CARBON/NAFION MODIFIED ELECTRODE.JOURNAL OF ELECTROANALYTICAL CHEMISTRY. VOL. 706. ISSUE . P. 7-12 17 61% 9

Classes with closest relation at Level 1


Rank Class id link
1 10694 CYP1A2//CAFFEINE//CAFFEINE METABOLISM
2 7455 PARACETAMOL//METHOCARBAMOL//ACETAMINOPHEN
3 6849 CAS 58 55 9//ABT BIOPHARM PHARMAKOKINETIK//ANTIASTHMATICS
4 21239 DOXAPRAM//RESPIRATORY STIMULANTS//APNEA OF PREMATURITY
5 28490 PAULLINIA CUPANA//GUARANA//PTYCHOPETALUM OLACOIDES
6 24335 ANTIBODIES IMMOBILISED ON A SOLID PHASE//ASSAY THEOPHYLLINE//CENT BIOCHEM BIOPHYS
7 22976 DIGOXIN ASSAY//VISUAL MEMBRANE IMMUNOASSAY//ALKALINE PHOSPHATASE LABEL
8 24702 XANTHINE//HYPOXANTHINE//XANTHINE BIOSENSOR
9 6725 ENERGY DRINKS//CAFFEINE//CAFFEINE WITHDRAWAL
10 4815 PU ERH TEA//BLACK TEA//THEARUBIGINS

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