German technology
Humic Substances Based Products
Humintech GmbH
Am Pösenberg 9-13
D-41517 Grevenbroich

Telefon: +49 2181 70 676 - 0
Fax: +49 2181 70 676 - 22
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Phenol-rich fulvic acid as a water additive enhances growth, reduces stress, and stimulates the immune system of fish in aquaculture by Thora Lieke, Christian E. W. Steinberg, Bo Pan, Irina V. Perminova, Thomas Meinelt, Klaus Knopf, Werner Kloas

Aquaculture has become imperative to cover the demands for dietary animal protein. Simultaneously, it has to overcome prejudices from excessive use of antibiotics and environmental impacts. Natural supplements are traditionally applied orally. In this study, we demonstrated another pathway: the gills. Humic substances are immunostimulants and a natural part of every aquatic ecosystem, making them ideal to be used as bath stimulants. Five and 50 mg C/L of a fulvic acid-rich humic substance was added for 28 days to the water of juvenile rainbow trout (Oncorhynchus mykiss). This fulvic acid is characterized by a high content of phenolic moieties with persistent free radicals and a high electron exchange capacity. The high concentration of the fulvic acid significantly increased growth and reduced the food conversion ratio and the response to a handling-stressor. Phagocytosis and potential killing activity of head kidney leukocytes were increased, as well as the total oxyradical scavenging capacity (TOSC) and lysozyme activity in the gills. In conclusion, immunostimulation via gills is possible with our fulvic acid, and the high phenolic content improved overall health and stress resistance of fish. More

„The humic substances preparation HuminFeed modulates lifespan and fertility of Moina macrocopa Straus” by Ramona Rauch

Humic substances are an important biogeochemical ecological factor that can initiate chemical stress in exposed organisms. The effects of stress by humic substances on Darwinian fitness are the subject of this thesis. Lifespan and fertility of the cosmopolitan water flea Moina macrocopa were examined under exposure of humic substances at environmentally realistic concentrations. More

Using humic acid in diets for dairy goats by Taskin Degirmencioglu

The effects of diets containing different levels of humic acid (HA) were determined on several blood and milk parameters in dairy goats. Eighteen Saanen goats (2 years old, 52 kg body weight) were fed three diets containing: 0 g HA/kg body weight (T1 ), 1 g HA/kg – (T2 ) or 3 g HA/kg – (T3 ) in a 3x3 latin square experimental design. Each period consisted of 21 days preliminary period and 7 days collection phase. More

Control of energy allocation in cladocerans by feed algae by Diploma zoologist Rihab, Bouchnak -Syria
Differential influence of the green alga by Rihab, Bouchnak
Dissolved humic substances by Waltraud Wild
Health promoting effects of humic substance (HS) in fish by Dr. Thomas Meinelt, Prof. Dr. Christian Steinberg, Dr. Stefan Heidrich
In vitro assessment of AhR-mediated activities of TCDD in mixture with humic substances by M. Bittner, K. Hilscherova, J.P. Giesy

Humic substances (HS) are ubiquitous natural products of decomposition of dead organic matter. HS is present in most freshwaters at concentrations ranging from 0.5 to 50 mg L1 . Organic carbon can represent 20% dry weight of sediments. Recently, the interaction of dissolved HS with the aryl hydrocarbon receptor (AhR) has been demonstrated. More

Humic Acid Substances in Animal Agriculture by K.M.S. lslam, А. Schuhmacher

Humic acids (НА), а class of compounds resulting from decomposition of organic matter, particularly plants аге natural constituents of drinking water, soil and lignite. lt inhibit bacterial and fungal growth, thus decrease levels of mycotoxins in feed. More

Peat as a feed supplement for animals by M. TRCKOVA, L. MATLOVA, H. HUDCOVA, M. FALDYNA, Z. ZRALY, L. DVORSKA, V. BERAN, I. PAVLIK

Peat is an easily available natural material and a source of biologically active substances widely used, not only in agriculture but in human and animal medicine as well. In recent years, interest in the use of peat as a feed supplement has increased, particularly due to its capability to prevent enteric diseases and to stimulate growth in piglets and pigs. More

Studies on vital brown geopolymers by Christian E.W. Steinberg, R. Menzel

Summary Report, by Commitee For Veterinary Medicinal Products Humic Acids and Their Sodium Salts

Humic acids are a class of compounds resulting from decomposition of organic matter, particularly plants, and are natural components of drinking water, soil and lignite. They are three dimensional macrocolloidal molecules with a polyaromatic center containing iso- and heterocyclic structures and peripheral side-chains. More

The effect of dietry humic acid supplementation one some productive and phsiological traits of laying hens by Maysa,M.Hanafy and A.M.H. El-Sheikh

This study was designed to investigate the effect of addition humic acid to the developed laying hen diets on egg production, egg quality and some physiological traits. More


Humintech is a biotech company based in Grevenbroich, Germany. We are primarily focused on the research, development and industrial production of humic matter and humic acids for the agricultural sector.  Our products find further use in the feed, pharmaceutical and construction industry, in veterinary medicine and for ecological purposes such as water purification and soil decontamination.


Humintech GmbH

Am Pösenberg 9-13
41517 Grevenbroich / Deutschland 

Phone: +49 2181 70 676 - 0
Fax: +49 2181 70 676 - 22


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