EFFECTS OF ROSEMARY (Rosmorinus officinalis) LEAVES AND ITS VOLATILE OILS ON WHEAT DOUGH PROPERTIES AND BREAD SHELF LIFE.

Volume 17 , Issue 3 , September 2015 , Pages 161-170

Authors

¹ Faculty of Agricultural sciences – Sulaimani University, Bakrajo Street, Food sciences Department,

The effects of ground rosemary leaves (2.5, 5, and 10%) and rosemary volatile oil (0.1,

0.2 and 0.4%), on wheat dough rheology, fermentation and its bread quality were

studied. Amylograph results showed a decrease in pasting temperature from 63°C to

61.5°C in all VO doses. Also amylograph results showed ground leaves had an inhibitory

effect on dough α-amylase especially at 2.5%. Farinograph results showed only 0.1%

VO had a significant effect on farino parameters while other treatments generally had a

softening effect. Dough fermentation values were decreased at all doses of ground

leaves and VOs except for 0.2% VO which had an activation effect. Also the dough and

loaf volume/weight were also decreased at all doses. The loaf shelf life was dose

dependent and significantly increased against mould growth up to thirty days storage.

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