Hydrite Chemical Co.

Bacteria Control


antibiotic-free antimicrobial process aids

Hydrite offers a vast line of products that helps improve ethanol fermentation performance, enhances overall yeast vitality, and promotes metabolic activity while reducing bacterial contamination.  This includes non-antibiotic antimicrobial technology for fermentation, propagation, and upstream and downstream ethanol processes. Hydrite offers gram-negative/gram-positive antimicrobial solutions designed for utilization in fuel ethanol fermentations.


GRAS cerified

Generally recognized

as safe (GRAS) 

Effective against both gram-positive and gram-negative bacteria

Effective against both gram-positive and gram-negative bacteria

multiple different applications

Multiple applications

antibiotic free

No antibiotics



Lactic acid bacteria (LAB) like Saccharomyces Cerevisiae and Lactobacilli are common contaminants in the fermentation stage of ethanol production. While ethanol facilities have historically used antibiotics to control bacteria, there are effective, antibiotic-free alternatives.


Saccharomyces Cerevisiae



  • Promote metabolic activity
  • Effective in fermentation and propagation

Saccharomyces Cerevisiae


  • Aid yeast propogation
  • Counter bacteria growth




Hydri-Maize 2759Antibiotic-free antimicrobial used in ethanol fermenation


Hydri-Maize HC2759 was introduced into a fuel ethanol facility (from the 12 surveyed) with high gram-negative and gram-positive bacterial counts (> 1.0 x 105 cells/ml). The same facility was also using greater than 15 1/2-oz bags of antibiotics. The simple test protocol was as follows:


Fuel ethanol test protocol

After applying the simple test protocol above, the test facility was able to:

  • Decrease antibiotic usage by more than 60%
  • Decrease acetic acid content by 28% when measured at the ferm drop confirming HC2759’s effectiveness against gram-negative bacteria strains.
  • Decrease lactic acid content by 41%, suggesting that HC2759 is freeing up more sugar for fermentation.


Acetic Acid content at drop

Acetic acid content at drop

lactic acid content at drop

lactic acid content at drop

Overall, the value created for this ethanol operation was a decrease in antimicrobial costs by 40% and a dramatic reduction in both gram-negative and gram-positive bacteria content per fermenter.


Download the Fermentation Performance Case Study



Hydritreat SB2216Highest strength antibiotic-free antimicrobialHydritreat benefits



  • Hydritreat is effective against gram (+) & (-) bacteria
  • No known bacteria resistance to Hydritreat
  • Reduces need for antibiotics
  • Generally Regarded As Safe for animal feed and FSMA compliant
  • More cost effective than antibiotics

Contact us about our bacteria control methods

Contact Us

Want to know more about our bacteria control methods? Contact us today.

Contact Us Today


17385 Golf Parkway
Brookfield, Wisconsin 53045
262-792-8721 Fax

© 2024 Hydrite Chemical - all rights reserved.