Ceruti Roberto Julio

11 Questions 24 Answers 0 Followers

Questions related from Ceruti Roberto Julio

Can Kluyveromyces marxianus ferment maltose?

The yeast K. marxianus is well known for its ability to ferment de disacharide lactose. It is also able to ferment the disaccharide maltose or not? If you can share citations with respect to this...

20 May 2024 7,393 3 View

It is possible to use refractometry to follow fermentative lactose degradation on whey based mediums?

Dear colleagues I am interested in the following by a simple measure of sugars degradation over culture time by microorganisms grown on a whey based medium with lacotse as the only sugar present...

11 February 2019 5,697 4 View

E. coli colonies may have an inusual pigmentation pattern when cultured on EMB agar?

As can be seen in attached images, we have cultured a pure E. coli strain on EMB agar, and the strain have grown over all the inoculated area, but only in certain portions of the plate the...

29 October 2018 4,900 5 View

Recommended temperature and pH conditions for Kluyveromyces marxianus alcoholic fermentation of lactose?

I am interested in ethanol production by Kluyveromyces marxianus in a medium having lactose as the only sugar present, can anyone recommend the best temperature and pH conditions for obtaining the...

23 May 2018 2,125 4 View

Why Sacharomyces cerevisiae can grow on lactose-rich medium when co-cultured with Kluyveromyces marxianus?

When reading the publication "Guo, X., Zhou, J., & Xiao, D. (2010). Improved ethanol production by mixed immobilized cells of Kluyveromyces marxianus and Saccharomyces cerevisiae from cheese...

18 April 2016 3,345 4 View

Lactose determination using beta-galactosidase + GOD/POD in cheese whey. Is it a right procedure?

Dear colleagues: I am interested in lactose determination and following during a fermentation process on cheese whey. I would like to perform the determination by the sequential treatment of...

28 January 2016 8,038 4 View

What type of GC column is better for GC analysis of non-derivatized free fatty acids?

We are interested in GC-FID quantitative analysis of FFA without previous derivatization, and I would like to know what column type and model is better for this purpose. Our objective at first is...

22 May 2015 5,309 15 View

Can anyone recommend a database of odour and aroma thresholds for volatile compounds?

I am particularly interested in volatile compounds presents in food products. I would appreciate any information you could give me, specially if there are online-available databases.

29 April 2015 829 11 View

Is there any database of Kováts index for volatile organic compounds?

I am searching for databases to compare values of experimentally obtained Kováts index in order to compare them with values obtained by others, for identification purpose. I worked on a GC-MS...

18 March 2015 3,173 14 View

Does anybody have a data of solubility of a anhydrous KOH in ethanol at 15°C or below?

Solubility of the KOH in ethanol at 15°C.

18 September 2014 3,506 3 View

Following of nitrogen compounds consumption by yeasts cultured with peptones as nitrogen sources?

We are studying different parameters associated with the growth of a yeast in a culture media containing yeast extract, lactose as the carbon source, and peptones (e.g. casein peptone) as the...

01 January 1970 3,345 4 View