John F. Hammerstone

6.0k citations

27 papers · 4.9k indexed · 2 hit papers · h-index 21

Co-authors: Sheryl A. Lazarus Harold H. Schmitz Ronald L. Prior Mark A. Kelm Gary R. Beecher Liwei Gu David B. Haytowitz Alyson E. Mitchell
Topics: Phytochemicals and Antioxidant Activities (17 papers)Tea Polyphenols and Effects (8 papers)Antioxidant Activity and Oxidative Stress (7 papers)
Cited by: Biochemistry Horticulture Food Science
Journals: Journal of Neuroscience American Journal of Clinical Nutrition Journal of Agricultural and Food Chemistry
Partner nations: United States Argentina Brazil

In The Last Decade

John F. Hammerstone

26 papers receiving 4.6k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Concentrations of Proanthocyanidins in Common Foods and Estimations of Normal Consumption

2004 723 citations Mark A. Kelm, John F. Hammerstone et al. Journal of Nutrition profile →
Screening of Foods Containing Proanthocyanidins and Their Structural Characterization Using LC-MS/MS and Thiolytic Degradation

2003 513 citations Liwei Gu, Mark A. Kelm et al. Journal of Agricultural and Food Chemistry profile →

Peers

Countries citing papers authored by John F. Hammerstone

Since Specialization

Citations

This map shows the geographic impact of John F. Hammerstone's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John F. Hammerstone with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John F. Hammerstone more than expected).

Fields of papers citing papers by John F. Hammerstone

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John F. Hammerstone. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John F. Hammerstone. The network helps show where John F. Hammerstone may publish in the future.

Co-authorship network of co-authors of John F. Hammerstone

This figure shows the co-authorship network connecting the top 25 collaborators of John F. Hammerstone. A scholar is included among the top collaborators of John F. Hammerstone based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John F. Hammerstone. John F. Hammerstone is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	Hydrogen peroxide formation in cacao tissues infected by the hemibiotrophic fungus Moniliophthora perniciosa 2011 ·Plant Physiology and Biochemistry ·(unknown),(unknown),(unknown),Carlos Priminho Pirovani,Abelmon da Silva Gesteira,Fabienne Micheli,Karina Peres Gramacho,John F. Hammerstone,Paulo Mazzafera,Júlio Cézar de Mattos Cascardo	49
2	Plant-Derived Flavanol (−)Epicatechin Enhances Angiogenesis and Retention of Spatial Memory in Mice 2007 ·Journal of Neuroscience ·Henriette van Praag,(unknown),G Yeo,(unknown),(unknown),Chunmei Zhao,(unknown),(unknown),Hagen Schroeter,John F. Hammerstone,Fred H. Gage	242
3	Analysis of Flavanols in Foods: What Methods are Required to Enable Meaningful Health Recommendations? 2006 ·Journal of Cardiovascular Pharmacology ·Rebecca J. Robbins,Catherine Kwik‐Uribe,John F. Hammerstone,Harold H. Schmitz	20
4	High-Performance Liquid Chromatography Separation and Purification of Cacao (Theobroma cacao L.) Procyanidins According to Degree of Polymerization Using a Diol Stationary Phase 2006 ·Journal of Agricultural and Food Chemistry ·Mark A. Kelm,(unknown),Rebecca J. Robbins,John F. Hammerstone,Harold H. Schmitz	179
5	Antioxidant and Membrane Effects of Procyanidin Dimers and Trimers Isolated from Peanut and Cocoa 2005 ·Journal of Agricultural and Food Chemistry ·Sandra V. Verstraeten,John F. Hammerstone,Carl L. Keen,César G. Fraga,Patricia I. Oteiza	91
6	Concentrations of Proanthocyanidins in Common Foods and Estimations of Normal Consumptionbreakdown → 2004 ·Journal of Nutrition ·Mark A. Kelm,John F. Hammerstone,Gary R. Beecher,Joanne Holden,David B. Haytowitz,Susan E. Gebhardt,Liwei Gu,Ronald L. Prior	723
7	Identification and Quantitation of Flavanols and Proanthocyanidins in Foods: How Good are the Datas? 2004 ·Journal of Immunology Research ·Mark A. Kelm,John F. Hammerstone,Harold H. Schmitz	33
8	Screening of Foods Containing Proanthocyanidins and Their Structural Characterization Using LC-MS/MS and Thiolytic Degradationbreakdown → 2003 ·Journal of Agricultural and Food Chemistry ·Liwei Gu,Mark A. Kelm,John F. Hammerstone,Gary R. Beecher,Joanne M. Holden,David B. Haytowitz,Ronald L. Prior	513
9	Liquid chromatographic/electrospray ionization mass spectrometric studies of proanthocyanidins in foods 2003 ·Journal of Mass Spectrometry ·Liwei Gu,Mark A. Kelm,John F. Hammerstone,Ze Zhang,Gary R. Beecher,Joanne M. Holden,David B. Haytowitz,Ronald L. Prior	242
10	Procyanidin dimer B2 [epicatechin-(4β-8)-epicatechin] in human plasma after the consumption of a flavanol-rich cocoa 2002 ·American Journal of Clinical Nutrition ·Roberta R. Holt,Sheryl A. Lazarus,M. Cameron Sullards,Qin Zhu,Derek D. Schramm,John F. Hammerstone,César G. Fraga,Harold H. Schmitz,Carl L. Keen	415
11	Stabilizing Effect of Ascorbic Acid on Flavan-3-ols and Dimeric Procyanidins from Cocoa 2002 ·Journal of Agricultural and Food Chemistry ·Qin Zhu,John F. Hammerstone,Sheryl A. Lazarus,Harold H. Schmitz,Carl L. Keen	34
12	Fractionation of Polymeric Procyanidins from Lowbush Blueberry and Quantification of Procyanidins in Selected Foods with an Optimized Normal-Phase HPLC−MS Fluorescent Detection Method 2002 ·Journal of Agricultural and Food Chemistry ·Liwei Gu,Mark A. Kelm,John F. Hammerstone,Gary R. Beecher,David Cunningham,(unknown),Ronald L. Prior	354
13	High-performance liquid chromatography/mass spectrometry analysis of proanthocyanidins in food and beverages 2001 ·Methods in enzymology on CD-ROM/Methods in enzymology ·Sheryl A. Lazarus,John F. Hammerstone,Gary E. Adamson,Harold H. Schmitz	21
14	Identification of Procyanidins and Anthocyanins in Blueberries and Cranberries (Vaccinium Spp.) Using High-Performance Liquid Chromatography/Mass Spectrometry 2001 ·Journal of Agricultural and Food Chemistry ·Ronald L. Prior,Sheryl A. Lazarus,Guohua Cao,(unknown),John F. Hammerstone	371
15	Procyanidin Content and Variation in Some Commonly Consumed Foods 2000 ·Journal of Nutrition ·John F. Hammerstone,Sheryl A. Lazarus,Harold H. Schmitz	273
16	The effect of cocoa procyanidins on the transcription and secretion of interleukin 1β in peripheral blood mononuclear cells 2000 ·Life Sciences ·Tin K. Mao,(unknown),(unknown),Carl L. Keen,Harold H. Schmitz,John F. Hammerstone,M. Eric Gershwin	106
17	Identification of Procyanidins in Cocoa (Theobroma cacao) and Chocolate Using High-Performance Liquid Chromatography/Mass Spectrometry 1999 ·Journal of Agricultural and Food Chemistry ·John F. Hammerstone,Sheryl A. Lazarus,Alyson E. Mitchell,Robert B. Rucker,Harold H. Schmitz	379
18	Sensitivity of Crinipellis perniciosa to procyanidins from Theobroma cacao L. 1995 ·Physiological and Molecular Plant Pathology ·(unknown),John F. Hammerstone,Leo J. Romanczyk,Douglas B. Furtek	8
19	The contribution of genotype to cocoa (Theobroma cacao L.) flavour 1994 ·Tropical Agriculture ·J. F. Clapperton,(unknown),(unknown),Dhongil Lim,(unknown),Leo J. Romanczyk,John F. Hammerstone	34
20	Lipid composition ofHerrania andTheobroma seeds 1994 ·Journal of the American Oil Chemists Society ·(unknown),John F. Hammerstone,Leo J. Romanczyk,(unknown)	18

About John F. Hammerstone

John F. Hammerstone is a scholar working on Biochemistry, Horticulture and Food Science, having authored 27 papers that have together received 4.9k indexed citations. Recurring topics across this work include Phytochemicals and Antioxidant Activities (17 papers), Tea Polyphenols and Effects (8 papers) and Antioxidant Activity and Oxidative Stress (7 papers). The work is most often cited by research in Biochemistry (2.9k citations), Horticulture (112 citations) and Food Science (1.6k citations). John F. Hammerstone has collaborated with scholars based in United States, Argentina and Brazil. Frequent co-authors include Sheryl A. Lazarus, Harold H. Schmitz, Ronald L. Prior, Mark A. Kelm, Gary R. Beecher, Liwei Gu, David B. Haytowitz, Alyson E. Mitchell, Robert B. Rucker and Guohua Cao. Their work appears in journals such as Journal of Neuroscience, American Journal of Clinical Nutrition and Journal of Agricultural and Food Chemistry.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact