Experiments involving the photosynthetic assimilation of [14C]carbon dioxide by plum leaves (Prunus domestica, var. Victoria) have indicated that D-glucitol (I) (sorbitol), the acylic polyol of these leaves, plays an important role in their metabolism (Anderson, Andrews & Hough, 1961). With leaves previously kept in the dark for 24 hr. a higher proportion of the incorporated 14C was utilized fo...

Introduction Conclusions References Tables Figures Back Close Abstract Introduction Conclusions References Tables Figures Back Close Abstract Water activities of a series of polyol/water systems were measured with an AquaLab dew point water activity meter at 298 K. The investigated polyols with carbon numbers from n=2−7 are all in liquid state at room temperature and miscible at any molar ratio...

We determined the added enthalpic and entropic contributions of protective osmolytes to the folding of a model peptide into its native beta-hairpin state. In contrast to entropically driven steric "crowding", this study shows that sugars and polyols can act as protective osmolytes by primarily diminishing the unfavourable enthalpic contribution to folding.

A diet low in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAPs) has been found to significantly reduce symptoms of irritable bowel syndrome (IBS). The diet is best implemented in two phases: initial strict elimination of foods high in FODMAPs, then gradual reintroduction based on symptoms. Further study of this diet's effect on intestinal microbiota is needed.

Polyurethane cationomer coats were synthesised on the basis of typical diisocyanates, properly selected polyether polyols, HO-tertiary amines and HCOOH as quaternisation reagents. The values of their surface free energy (SFE) parameters were obtained by the van Oss-Good method, with the use of the contact angle values which had been found by the goniometric method. Based on the obtained finding...

Polyols are important biomass-based building blocks for chemical production. In this work, a hydrotalcite-derived PtNi alloy catalyst (PtNi/HT) was prepared with high metal dispersion under microwave-assisted synthesis and employed glucose hydrogenation, where 95.7% of converted 90.1% selectivity into polyols at 393 K in water. The PtNi/HT stable could be recycled least five runs glucose. Lower...

Abstract Palm oil polyol-based foams have inflexible and brittle properties. polyols a lower molecular weight. Polyols with high weight primary OH group, such as polyethylene glycol (PEG)-400, can provide the flexible properties of polyurethane foam. This study aimed to examine optimum concentration PEG-400, which produce foam made from palm best characteristics based on mechanical compared pol...

Determination of molecular chirality is becoming increasingly important due to the sophistication in mode of action studies of biological reactions and the importance of chiral drugs. The exciton coupled CD, based on through space coupling, is a versatile microscale method with superb sensitivity that can be applied to a variety of problems including biopolymers and clusters in lipids. Applicat...