Burdock Group takes pride in the professional and academic achievements of its staff. As part of their professional development, our staff regularly publish in scientific and trade journals.


The following articles have been written by current and former Burdock Group team members. Please contact us at to request a copy of any of the publications referenced below, or for more information regarding our services.

Textbooks Published


Burdock Group published Fenaroli's Handbook of Flavor Ingredients - Sixth Edition


Dr. Burdock co-authors the chapter on Food Toxicology in the 8th edition of Casarett & Doull's Toxicology: The Basic Science of Poisons. This textbook is the main resource used in classrooms worldwide to teach the toxicology and safety of food. 



Consumer Education Information


SupplySide West Preview: Probiotic Regulations

By Ray A. Matulka, Ph.D.
Nutritional Outlook
September 2015


What Does Medical Food Mean Today?

By Laurie C. Dolan, Ph.D.
Nutritional Outlook
September 2015


Probiotics: The Regulatory Challenges of Classification

By Ray A. Matulka, Ph.D.
Natural Products INSIDER
August 2015


The Emerging Regulatory Crisis for Pet Food Ingredients

By George A. Burdock, Ph.D.
Petfood and Animal Nutrition 2.0 Digital Issue
July 2015


Nano Ingredients and Pet Food: Is the Regulatory Cost Worth the Potential Benefits?

By Ray Matulka, Ph.D.
Petfood Industry
May 2015


Probiotics: Supplement, Drug or Something in Between?

By Ray Matulka, Ph.D.
Agro FOOD Industry Hi Tech
March/ April 2015


Suppliers and Manufacturers Must Cooperate in Regulatory Compliance

By Ray Matulka, Ph.D.
Nutritional Outlook
March 2015


Agree to Disagree: EU vs US Health Claims

By Carrie Kennedy and Anne-Laure Tardy
The World of Food Ingredients
December 2014


The Importance of Consumption Analysis in an Ingredient Safety Assessment

By Ray A. Matulka, Ph.D., Arlene Morales, and Silvia Ulm
ACT Poster Session
November 2014


FDA's Distinction without Difference

By George A. Burdock, Ph.D.
Natural Product INSIDER Digital Issue
October 2014


Nanotechnology: The Regulatory Impact

By George A. Burdock, Ph.D.
The World of Food Ingredients
September 2014


Food Colours versus Colouring Foods

By Ray A. Matulka, Ph.D. and Anne-Laure Tardy
Agro FOOD Industry Hi Tech
May/June 2014


Regulatory Considerations and the Pet Food Market

By George A. Burdock, Ph.D.
SupplySide Insights: Animal Nutrition
August 2013


Nanotechnology: A Game Changer for Pet Food

By George A. Burdock, Ph.D. and Ray A. Matulka, Ph.D.

NPA Newsletter

May/June 2013


Nanotechnology Comes to Pet Food

By George A. Burdock, Ph.D.
Pet Food Industry
November 2012

Assessing Sweetener Safety
By Ray A. Matulka, Ph.D. and Nancy J. Szabo, Ph.D
The World of Food Ingredients
Oct/Nov 2012

Staying in the Claim Game

By Dr. George Burdock
The World of Food Ingredients
September 2012


Is GRAS the cure for the high rate of NDI rejections?
By George A. Burdock, Ph.D.
Functional Ingredients

April 2012


Examining Echinacea Part 1 & 2

By Nancy J. Szabo, Ph.D.
Nutraceutical Business & Technology
January/February 2012

Label Claims Provide a Global Platform

By Nancy J. Szabo, Ph.D. and Ray A. Matulka, Ph.D.
Natural Products INSIDER
September 2011


Nanotechnology's Benefits and Risks for Dietary Supplements
By George A. Burdock, Ph.D.
Nutritional Outlook
March/April 2011


Dietary Supplements and Bioavailability: Looking for Some Action?
By Jennifer Kwok 
Nutritional Outlook
Jan/Feb 2011


Correlating Preclinical, Clinical and Post-Marketing Surveillance Data: A Case Study
Corresponding authors Ioana G. Carabin, M.D. and George A. Burdock, Ph.D.
Nutraceutical Business & Technology
Sept/Oct 2010


Coloring Options: Replacing synthetic food coloring with a "natural source" coloring is not as simple as it seems

By Laurie C. Dolan, Ph.D. and Ray A. Matulka, Ph.D.

Prepared Foods

July 2010


By George A. Burdock, Ph.D. and Ray A. Matulka, Ph.D.
Nutritional Outlook
May 2010


GRAS-fed animal feed markets set to open 
By George A. Burdock, Ph.D.

NewHope 360 Functional Ingredients
February 1, 2010


The Future of Dietary Supplements as Pet Food Ingredients
George A. Burdock ,Ph.D. and Ray A. Matulka, Ph.D
Natural Products INSIDER
September 2009


Holding Up Your Claim
Laurie C. Dolan Ph.D.
The World of Food Ingredients
June/July 2009


Ensuring Probiotic Efficacy
Ray A. Matulka, Ph.D. and Ioana Carabin, M.D
The World of Food Ingredients
April/May 2009


Emerging Delivery Technologies Breed Emerging Uncertainty
Laurie Dolan, Ph.D. and George A. Burdock, Ph.D.
Nutraceuticals World
March 2009


Arctium lappa fruit extract: An effective matrix stimulator and antioxidant
for aging skin
Laurie Dolan, Ph.D. and George A. Burdock, Ph.D.
Household and Personal Care Today
March 2009


A Safe Landing in the U.S. Market
George A. Burdock, Ph.D., Christine Crincoli, Ph.D. and Simone Koenig
Nutraceutical and Business Technology
March/April 2009


How to Stake a Claim
Lonnie D. Williams, Ph.D. and Amy C. Mozingo, M.S.
Prepared Foods
January 2009


Regulatory & Scientific Roadmap for Claims
George A. Burdock, Ph.D., Amy C. Mozingo, M.S., John W. Rochowicz, B.S.
Natural Products INSIDER
October 2008


Scientific Peer Reviewed Articles


Safety assessment of the microalgae Nannochloropsis oculata. Matulka RA, Kagan ML. Toxicology Papers. Volume 2, 2015, Pages 617–623. 2015 March 8; DOI:10.1016/j.toxrep.2015.03.008


Hydroxytyrosol: Lack of Clastogenicity in Bone Marrow Chromosome Aberration in Rats. Dolan LC, Hofman-Huther H, Amann N. BioMed Central 7:9232014 Dec 16. DOI: 10.1186/1756-0500-7-923.


Safety evaluation of Whole Algalin Protein (WAP) from Chlorella protothecoides. Szabo NJ, Matulka RA, Chan T.  Food Chem Toxicol. 2013 Jun 1;59C:34-45. doi: 10.1016/j.fct.2013.05.035. [Epub ahead of print]


US regulations on dietary supplements: How are they regulated? Ray Matulka, Ph.D. (2013) Agro Food Industry Vol. 24(4) 18-20.

Maintaining freshness in the global food market. Ray A. Matulka  (2012) Agro Food Industry Vol. 23(3), 2.

Claims: the United States and European perspective. Laurie C. Dolan, Violaine Chaumont (2011) Agro Food Industry Vol. 2(4), 5-7.

Safety evaluation of Lactobacillus pentosus strain b240. Nancy J. Szabo, Laurie C. Dolan, George A. Burdock, Takashi Shibano, Shin-ichi Sato, Hiroshi Suzuki,Tohru Uesugi, Satoko Yamahira, Masamichi Toba, Hirofumi Ueno. Food and Chemical Toxicology, 49 (2011) 251–258.

Evidence-Based Review on the Effect of Normal Dietary Consumption of Fructose on Blood Lipids and Body Weight of Overweight and Obese Individuals. Laurie C. Dolan; Susan M. Potter; George A. Burdock. Critical Reviews in Food Science and Nutrition, 50: 10, 889 — 918.

Increased plasma PYY levels following supplementation with the functional fiber PolyGlycopleX in healthy adults. Reimer, RA, Pelletier, X, Carabin, IG, Lyon, M, et al (2010).  European Journal of Clinical Nutrition advance online publication 28 July 2010; doi: 10.1038/ejcn.2010.141 

Defining nutrients: Are Some Antioxidants Left on the Sidelines? R.A. Matulka (2010) Agro Food Industry Vol. 21, n. 6:2-3.

To link to this Article: DOI: 10.1080/10408398.2010.512990


Naturally Occurring Food Toxins Laurie C. Dolan , Ray A. Matulka and George A. Burdock. Toxins 2010, 2(9), 2289-2332; doi:10.3390/toxins2092289. 

Safety studies conducted on a proprietary high-purity aloe vera inner leaf fillet preparation, Qmatrix® L.D. Williams, G.A. Burdock, E. Shin, S. Kim, T.H. Jo, K.N. Jones, R. Matulka (2010). Regulatory Toxicology and Pharmacology. Volume 57, Issue 1, June 2010, Pages 90-98.


Safety and Efficacy of Hydr oxycitric Acid Derived from Garcinia cambogia – A Literature Review. S. J. Stohs, H.G. Preuss, S.E. Ohia,G.R. Kaats, C.L. Keen, L.D. Williams, and G.A. Burdock. HerbalGram Spring 2010;85.

Safety Studies Conducted on a Proprietary High-Purity Aloe Vera Inner Leaf Fillet Preparation, Qmatrix®
. L.D. Williams, G.A. Burdock, E. Shin, S. Kimb, T.H. Joc, K.N. Jones, and R.A. Matulka (2010). Regulatory Toxicology and Pharmacology (online ahead of print).

Evidence that iodine supplementation should be considered during pregnancy. L.C. Dolan and G.A. Burdock (2009) Agro Food Industry: Focus on infant/children nutrition, Vol.20, n.6:3-5


The best blend for greatest profits combines innovation and safety. R.A. Matulka and R.A. McNeil (2009) Agro Food Industry Vol. 20, n.6:12-13


A formula for preserving brand integrity during flavour innovation. R.A. Matulka and G.A. Burdock (2009) Agro Food Industry 20:70-72.


Literature review on the safety of Toyocerin, a non-toxigenic and non-pathogenic Bacillus cereus var. toyoi preparation.L.D. Williams, G.A. Burdock, Guillermo Jiménez b, Marisol Castillo (2009) Regulatory Toxicology and Pharmacology 55 (2009) 236–246.


Safety studies conducted on high-purity trans-resveratrol in experimental animals.L.D. Williams and G .A. Burdock (2009) Food and Chemical Toxicology 47:170–2182


No evidence demonstrating hepatotoxicity associated with hydroxycitric acid. S.J. Stohs, H.G. Preuss, S.E. Ohia, G.R. Kaats, C.L. Keen, L.D. Williams and G.A. Burdock (2009) World Journal of Gastroenterology 15:32. pp. 4087-4089


Genotoxicity studies on a high-purity rebaudioside A preparation.L.D. Williams and G.A. Burdock (2009) Food and Chemical Toxicology 47:1831-1836

The safety of PolyGlycopleX® (PGX®) as shown in a 90-day rodent feeding study.R.A. Matulka, M. Lyon, S. Wood, P. A. Marone, D.J. Merkel and G.A. Burdock, (2009) Nutrition Journal 8:1


Safety assessment of kola nut extract as a food ingredient. G.A. Burdock, I.G. Carabin and Christine M. Crincoli, (2009) Food and Chemical Toxicology


Supplementation of a functional fiber (Polyglycoplex®) to the diet is well tolerated by healthy subjects in a clinical trial. I.G. Carabin, M.R. Lyon, S. Wood, X. Pelletier, Y. Donazzolo and G.A. Burdock, (2009) Nutrition Journal 8:9. pp. 1-11


Acute and subchronic toxicity and genotoxicity of SE5-OH, an equol-rich product produced by Lactococcus garvieae. S. Yee, G.A. Burdock, Y. Kurata, Y. Enomoto, K. Narumi, S. Hamada, T. Itoh, Y. Shimomura and T. Ueno, (2008) Food and Chemical Toxicology 46:2713–2720 (Available online ahead of press)


Developmental and reproductive effects of an equol-rich product, SE5-OH. R.A. Matulka, I. Matsuura, T. Uesugi, T. Ueno and G.A. Burdock, (2008) Journal of Toxicology


Lack of toxicity by medium chain triglycerides (MCT) in canines during a 90-day feeding study. R.A. Matulka, L.J. Thompson and G.A. Burdock, (2008) Food and Chemical Toxicology 47:35–39


Safety assessment of coriander (Coriandrum sativum L.) essential oil as a food ingredient. G.A. Burdock and I.G. Carabin, (2008) Food and Chemical Toxicology 47:22–34


In vitro and in vivo safety studies of a proprietary whey growth factor extract. A.R. Dyer, G.A. Burdock, I.G. Carabin, M.C. Haas, J. Boyce, R. Alsaker and L C. Read (2008) Food and Chemical Toxicology 46:1659–1665 (Available online)


Safety assessment of 2-ethyl-3, (5 or 6)-dimethylpyrazine as a food ingredient. G.A. Burdock and I.G. Carabin (2008) Regulatory Toxicology and Pharmacology

Safety assessment of ylang-ylang oil as a food ingredient. G.A. Burdock and I.G. Carabin (2008) Food and Chemical Toxicology 46:433-445


Safety assessment of sandalwood oil (Santalum album L.).
G.A. Burdock and I.G. Carabin (2008) Food and Chemical Toxicology 46:421-432