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This paper aims to evaluate the separation and purification characteristics of flavonoids from polygonum cuspidatum (PC) extracts by using macroporous adsorption resins (MAR) mixed bed to improve the utilization rate of flavonoids.

Taking the separation performance of flavonoids as an evaluation index, the best MAR were screened from 31 sorts of MAR and combined the best MAR to form a MAR mixed bed for adsorption and separation of flavonoids.

By studying the separation conditions that affect flavonoids, the results showed that resin LZ-72 has best separation and purification effect on flavonoids under the optimal adsorption and desorption conditions, the purity of the obtained flavonoid compound reaches 82.50%, 2.66 times of the initial extract, and the recovery rate reaches 89.70%. Theoretical research results have shown that the adsorption of flavonoids by MAR conforms to the pseudo-second-order kinetics and Freundlich models.

Because the flavonoids in PC have great medicinal value, the purpose of this work is to develop a method of separating and purifying flavonoids from PC, which will provide a certain foundation for the development of medicine.

This contribution provided a novel way to separate flavonoids from PC. Under the optimal conditions, the content of flavonoids in the product was increased 2.66-fold from 31.01% to 82.50%, and the recovery yield was 89.70%.

In the UK, Japanese knotweed is an invasive, non‐native plant that has the potential to cause significant damage to buildings, foundations and development sites if left to establish. The plant's bamboo‐like stems can push their way through tarmac and expose weaknesses or cracks in concrete. The purpose of this paper is to investigate the current problems caused by Japanese knotweed within the UK and to ascertain the extent to which the knotweed legislation provides clear enough guidelines and measures, and, if not, how this could be addressed.

A literature review and interviews have investigated the current and future eradication and control techniques available for Japanese knotweed. The primary and secondary research conducted has incorporated the views and opinions of experienced Japanese knotweed experts. Case studies of sites infested with knotweed have also been carried out.

The study has identified and recommended that both public and professional awareness of Japanese knotweed still needs to be increased, throughout the UK. A detailed identification card has therefore been produced as part of this study, in order to show the different growth stages of the invasive plant, throughout the year. The study has demonstrated that an eradication technique must be carefully chosen and tailored to suit each infested site after a full site survey. The semi‐structured interviews have established that the current legislation, guidance notes and also the “Knotweed Code of Practice” produced by the Environmental Agency, provide adequate guidance on controlling Japanese knotweed. The research highlighted that knotweed spreading from neighbouring properties was a potential problem, but in practice, neighbours usually reach mutual agreement to avoid high legal costs.

Japanese knotweed is an increasing problem in the UK and this research will increase the awareness of those instructed to inspect property or development sites where infestation may have occurred. Professionals within the construction industry including surveyors, estate agents, developers and project managers will all find this paper of benefit.

In this study, a novel glutathione (GSH) surface molecular imprinting polymer (SMIP) was successfully prepared by using macroporous adsorption resins (MAR) as substrate, which could separate and purify GSH efficiently.

SMIP was synthesized by chloromethylated modified MAR (LX1180-Cl) as the substrate, N, N’-methylenebisacrylamide (NMBA) as a crosslinker, GSH as a template, acrylamide (AM) and N-vinylpyrrolidone (NVP) as functional monomers. The morphology and structure of the polymer were characterized by scanning electron microscope and Fourier transforms infrared spectroscopy.

The maximum adsorption capacity toward GSH was 39.0 mg/g and the separation decree had relation to L-cysteine (L-cys) was 4.2. The optimal operation conditions were studied in detail and the got as follows: the molar ratios of NMBA, AM, GSH and NVP, were 7.0, 0.8 and 0.5. The optimal time and temperature were 14 h and 40°C, respectively. The Langmuir and pseudo-first-order model were fitting these adsorption characteristics well.

GSH has a diversity of medicinal and bioactive functions, so the purpose of this study representing a method in separate and purify technology of GSH, which provided a way for the development of medicine.

This contribution provided a novel way to separate GSH from L-cys. Under the optimal conditions, the maximum adsorption capacity toward GSH was 39.0 mg/g and the separation decree had relation to L-cys was 4.2.