15 March 2019 - Glutenlight

Moderate decrease of pH by sourdough fermentation is sufficient to reduce phytate content of whole wheat flour through endogenous phytase activity.

Studies and Research

by luciano on 15 March 2019

J Agric Food Chem

Phytate Degradation during Breadmaking

Studies and Research

by luciano on 15 March 2019

Phytate Degradation during Breadmaking

Phytic acid

Article

by luciano on 15 March 2019

Phytic acid makes up about 1% of wheat and rye flours, and reduces the bioavailability of calcium, magnesium, and iron by forming complexes with the divalent cations. Phytic acid also inhibits enzymes in the digestive system needed to breakdown starch and protein.1 This explains why some people experience discomfort from eating whole grain wheat products. The sour dough neutralizes the phytic acid and “pre-digestes” the wheat proteins during the fermentation process transforming them into micronutrients that are easy to digest.2

REFERENCES

[1] Vaintraub, I. A. & Bulmaga, V. P. (1991). Effect of phytate on the in vitro activity of digestive proteinases. Journal of Agricultural and Food Chemistry 39 (5), 859-861 DOI: 10.1021/jf00005a008

[2] Gänzle, M. G. (2014). Enzymatic and bacterial conversions during sourdough fermentation. Food Microbiology, 37(0), 2-10. doi:http://dx.doi.org.libproxy.clemson.edu/10.1016/j.fm.2013.04.007

Deepening:

Phytate Degradation during Breadmaking

Moderate decrease of pH by sourdough fermentation is sufficient to reduce phytate content of whole wheat flour through endogenous phytase activity.

Utilizzazione di farine macinate a pietra semintegrali o integrali -con certa e corretta fase di preparazione prima della macinatura-di grani antichi selezionati.
Utilizzazione di metodiche per la realizzazione degli impasti per prodotti da forno salati con lunghe maturazioni.
Utilizzazione di pasta madre (batteri lattici) realizzata con le stesse farine da sola o in combinazione con lieviti (miceti tra i quali il più conosciuto è il “Saccharomyces Cerevisiae”).
Esclusione tassativa di miglioratori e/o additivi.

Natural stone ground flour is the personal first choice but it is not “ad excludendum” with respect to those milled with rollers both for the importance of the modern technology used today which guarantees products with high sanitary hygiene standards and for the objective difficulty in finding “true” Ancient grains correctly produced and ground.

The method described for making bread doughs (and not only) is universally recognized (for certain types of salty baked goods) such as that capable of giving the finished product the best organoleptic qualities, the longest and safest shelf-life and the highest digestibility.

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Moderate decrease of pH by sourdough fermentation is sufficient to reduce phytate content of whole wheat flour through endogenous phytase activity.

Phytate Degradation during Breadmaking

Phytic acid