World: Malt prices may cheer up if heat continues ...Click here

World: ‘Beer’ made with industrial enzymes will never be equal to real natural beer ...Click here

Belgium & Mexico: Arbitration panel decides Grupo Modelo shouldn’t have claims to AB/InBev merger ...Click here

Japan: H1 beer shipments lowest since 1992 ...Click here

Japan & United States: Sapporo looking for US beer brand ‘with recognition’ ...Click here

India: United Breweries to start selling locally produced Heineken by next FY ...Click here

Belarus: Carlsberg increases stake in Olivaria brewery, no plans to take full control yet ...Click here

World: Barley production estimate for 2010/11 cut by USDA again ...Click here

EU: The new grain year may see smaller ending stocks of barley - analysts ...Click here

Ukraine: 2009/10 barley export volume deemed quite possible in the new crop year ...Click here

Russia: Crop estimates shrink under heat ...Click here

Spain & Cape Verde: Spanish bottler acquires Cape Verde brewer ...More Info

Japan: Asahi’s beer sales up in June but still lower in the first half of this year ...More Info

India: SABMiller India to innovate in new access points to its beer ...More Info

Ethiopia: Heineken beer may be brewed in Ethiopia ...More Info

France: Carlsberg’s subsidiary to brew with special barley variety imported from Denmark ...More Info

Asia: Heineken voted most popular beer brand in Asia ...More Info

India: Kingfisher Ultra beer launched in New Delhi ...More Info

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World: ‘Beer’ made with industrial enzymes will never be equal to real natural beer

Beer has been brewed for thousands of years and can be an absolutely natural, minimally-processed fermented beverage. However, a lot of modern beer brands ...More Info

Belgium & Mexico: Arbitration panel decides Grupo Modelo shouldn’t have claims to AB/InBev merger

AB InBev, the world’s No. 1 brewer based in Leuven, Belgium, announced on July, 12 that an arbitration panel issued a decision finding that ...More Info

Japan: H1 beer shipments lowest since 1992

Japan’s first-half total beer shipments fell 4.5 percent to 207.5 million cases, the lowest since the companies began tracking data in 1992, Bloomberg reported ...More Info

Japan & United States: Sapporo looking for US beer brand ‘with recognition’

Japanese brewer Sapporo Holdings Ltd., part-owned by U.S. hedge fund Steel Partners, is in talks with at least two companies to buy a beer ...More Info

India: United Breweries to start selling locally produced Heineken by next FY

India’s largest brewer United Breweries Ltd is planning to locally produce Dutch beer brand Heineken by next fiscal year besides launching a refurbished Tiger ...More Info

Belarus: Carlsberg increases stake in Olivaria brewery, no plans to take full control yet

Danish giant Carlsberg has raised its stake in Minsk-based Olivaria brewery from 30 to 47 percent, Tatyana Antonchik, Carlsberg Group’s communication director for Eastern ...More Info

World: Malt prices may cheer up if heat continues

June did not see any significant activity on the world’s malt markets, industry observers report.

Beer garden weather, the football world cup and firmer ...More Info

World: Barley production estimate for 2010/11 cut by USDA again

USDA’s July report has cut the estimate of world barley production in 2010/11 versus the estimate a month earlier by around 7,000 tonnes to ...More Info

EU: The new grain year may see smaller ending stocks of barley - analysts

Barley intervention has been abolished for the new grain year. If all intervention applications of the past campaign are accepted, the EU will have ...More Info

Ukraine: 2009/10 barley export volume deemed quite possible in the new crop year

Ukraine escaped the drought conditions, which spoiled large parts of the Russian and Kazakh crops, though the harvest in the southern regions has been ...More Info

Russia: Crop estimates shrink under heat

About 9 mln hectares of grain, out of 48 mln hectares sown in Russia, have been lost to the dry and hot weather which ...More Info

The Effects of Linoleic Acid Supplementation of Cropped Yeast on its Subsequent Fermentation Performance and Acetate Ester Synthesis

N. Moonjai, K. J. Verstrepen, F. R. Delvaux, G. Derdelinckx, and H. Verachtert

J. Inst. Brew. 108(2), 227-235, 2002
ABSTRACT
For beer wort fermentation the addition of unsaturated fatty acids has sometimes been suggested as an alternative to wort oxygenation. This can however negatively affect the synthesis of acetate esters and consequently beer flavour. This work investigates the effect of supplementing a cropped yeast with an unsaturated fatty acid on the fermentation performance of the pitching yeast. Cropped yeast is in a different physiological state to yeast pitched in unfermented wort. Using a synthetic medium for the fermentations, it was found that the incubation of cropped yeast with linoleic acid resulted in two important changes in the yeasts composition: (1) the ratio of unsaturated fatty acids to total fatty acids increased from 0.53 to 0.66 and (2) the ratio of trehalose to glycogen increased from 0.17 to 0.49. The performance of this yeast in subsequent fermentations was compared to unsupplemented yeast under three conditions: medium pre-aeration, de-aerated medium and de-aerated medium with newly added unsaturated fatty acid. It was found that the supplemented pitching yeast showed growth, attenuation and ethanol formation profiles similar to those obtained with unsupplemented yeast in pre-aerated medium, which simulated the normal brewing practice. Compared to fermentations with unsaturated fatty acids added to the medium, the supplemented cropped yeast did not induce a reduction in acetate ester synthesis. Results indicated that the supplementation of cropped yeast with unsaturated fatty acids could be an interesting alternative to wort oxygenation to restore the optimal membrane fluidity of the yeast.
Key words: Acetate ester synthesis, unsaturated fatty acids, wort oxygenation. Load full article, 9 pages, 218 kb , PDF file