Glycoluril derived cucurbituril analogues and the emergence of the most recent example: tiarauril.

Cucurbituril analogues can bear some of the chemical and physical characteristics of their parental origin and are derived wholly or in part from glycolurils (including homologues). The development of analogues is discussed from their earliest origins to the most recent developments, which includes deviations in binding properties and the inclusion of alternative molecular units in conjunction with glycolurils. Examples of alternative guest binding are discussed and compared to the behaviour of conventional cucurbituril.

Effect of pre rigor stretching on beef tenderness development.

The objective of this study was to determine effects of pre rigor stretching on beef tenderness development. Beef loins (M. longissimus dorsi; n=24) were assigned to either stretching or non-stretching treatments and aged for 14 days at -1.