I. Kölling-speer

The lipid fraction of the coffee bean

K. Speer, I. Kölling-speer, 2006 .

The raw bean

A. Teixeira, K. Speer, I. Kölling-speer, 2005 .

The Polyphenolic Composition of Cistus incanus Herbal Tea and Its Antibacterial and Anti-adherent Activity against Streptococcus mutans

C. Hannig, K. Speer, I. Kölling-speer, 2015, Planta Medica.

Preventive Applications of Polyphenols in Dentistry—A Review

C. Hannig, K. Speer, I. Kölling-speer, 2021, International journal of molecular sciences.

Effect of fragaria vesca, hamamelis and tormentil on the initial bacterial colonization in situ.

C. Hannig, K. Speer, I. Kölling-speer, 2020, Archives of oral biology.

Determination of Free Diterpenes in Green and Roasted Coffees

S. Strohschneider, K. Speer, I. Kölling-speer, 1999 .

Differentiation of Honeydew Honeys from Blossom Honeys and According to Their Botanical Origin by Electrical Conductivity and Phenolic and Sugar Spectra.

K. Speer, I. Kölling-speer, Kristin Recklies, 2021, Journal of agricultural and food chemistry.

Cornflower Honey as a Model for Authentication of Unifloral Honey Using Classical Methods Combined with Plant-Based Marker Substances Such as Lumichrome.

K. Speer, I. Kölling-speer, B. Lichtenberg-Kraag, 2021, Journal of agricultural and food chemistry.

Effects of controlled storage on the lipid fraction of green Arabica coffee beans.

K. Speer, I. Kölling-speer, T. Kurzrock, 2005 .