A simplified identification key described by Deak and Beuchat (T. Deak and L. R. Beuchat, J. Food Prot. 50:243-264, 1987) and the computer method of Barnett et al. (J. A. Barnett, R. W. Payne, and D. Yarrow, Yeast Identification Program, 1985) were used to identify 12 reference strains and 382 yeasts isolated from cultured milk products. Because the simplified key failed to account for species ...

How does it work and what is it for? Two explanations have been offered. Yarrow et al. hypothesized that it serves to create perceptual continuity across saccadic eye movements during which visual sensitivity is largely reduced, mainly due to saccadic suppression. Rose’s and Summers’ demonstration of chronostasis without eye movements, however, raises a question about this. The time perception ...

In completion of our studies on Achillea exudate flavonoids, 11 alpine species of Achillea sect. Ptarmica were analyzed for their aglycone profiles. The study focuses on species commonly associated with A. moschata. The major flavonoid constituents found in exudates of most taxa were 6-hydroxyflavonol 3,6,4'-trimethyl ethers, except in A. ageratifolia and its subspecies, which are characterized...

The in vitro antioxidant and antimicrobial activities of the essential oil and methanolic extract of Achillea sieheana Staf. (Asteraceae) were investigated in this study. The chemical composition of the essential oil isolated by hydro-distillation from the aerial parts of A. sieheana was analyzed by GC-MS. Camphor (43.36%), Artemisia ketone (25.95%), 1.8-cineole (6.29%) and camphene (4.77%) wer...

1. Adult males average 10% larger than females in natural populations of Yarrow’s Spiny Lizard ( Sceloporus jarrovii ). In two previous studies of free-living animals, we found that (1) this sexual size dimorphism (SSD) develops because yearling males grow more quickly than females and (2) the sex steroid testosterone (T) may regulate this sex difference in growth: castrated males (CAST) grow m...

1. Herbs, thyme essential oil (EO) and condensed tannin (CT) extracts were compared for their effects, as dietary supplements, on broiler growth performance, nutrient digestibility and volatile fatty acid (VFA) profiles in the gut. Cooked meat from the birds fed on diets with 4 herbs and an EO extract was compared by a taste panel against those fed on the control treatment, for organoleptic pro...