A New Conceptual 'Cylinder' Framework for Sustainable Bioeconomy Systems and Their Actors.

Concepts for sustainable bioeconomy systems are gradually replacing the ones on linear product chains. The reason is that continuously expanding linear chain activities are considered to contribute to climate change, reduced biodiversity, over-exploitation of resources, food insecurity, and the double burden of disease. Are sustainable bioeconomy systems a guarantee for a healthy planet? If yes, why, when, and how? In literature, different sustainability indicators have been presented to shed light on this complicated question.

Transition from fractal to spherical aggregates of globular proteins: Brownian-like activation and/or hydrodynamic stress?

We report on the structure of whey protein aggregates formed by a short heating coupled to shear at high temperatures (80-120) and neutral pH in scale-up processing conditions, using gel filtration chromatography, light scattering, small angle neutron scattering, and cryogenic transmission electron microscopy. The results are interpreted in terms of coexistence of residual non-aggregated proteins and aggregates. The characteristics of aggregates such as the size, the aggregation number and the shape evidence two different morphologies.

SAXS conformational tracking of amylose synthesized by amylosucrases.

Amylose, a linear polymer of α(1,4)-linked glucosyl units and a major constituent of starch granules, can also be enzymatically synthesized in vitro from sucrose by bacterial amylosucrases. Depending on the initial sucrose concentration and the enzyme used, amylose oligomers (or polymers) are formed and self-associate during synthesis into various semicrystalline morphologies. This work describes for the first time a synchrotron SAXS study of the structure in solution of two amylosucrases, namely, NpAS and the thermostable DgAS, under conditions of polymer synthesis and, simultaneously, the amylose conformation.

Injection of calcium phosphate pastes: prediction of injection force and comparison with experiments.

Calcium phosphate ceramics suspensions (ICPCS) are used in bone and dental surgery as injectable bone substitutes. This ICPCS biomaterial associates biphasic calcium phosphate (BCP) granules with hydroxypropylmethylcellulose (HPMC) polymer. Different ICPCS were prepared and their rheological properties were evaluated in parallel disks geometry as a function of the BCP weight ratio (35, 40, 45 and 50 %).

The stability mechanisms of an injectable calcium phosphate ceramic suspension.

Calcium phosphate ceramics are widely used as bone substitutes in dentistry and orthopedic applications. For minimally invasive surgery an injectable calcium phosphate ceramic suspension (ICPCS) was developed. It consists in a biopolymer (hydroxypropylmethylcellulose: HPMC) as matrix and bioactive calcium phosphate ceramics (biphasic calcium phosphate: BCP) as fillers.