Plant-Derived Enzymes Producing Chiral Aroma Compounds and Potential Application

Aroma(volatile)compounds play important ecological functions in plants,and also contribute to the quality of plant-derived foods.Moreover,chiral aroma compounds affect their functions in plants and lead to different flavor quality properties.Formations of chiral aroma compounds are due to the presence of enzymes producing these compounds in plants,which are generally involved in the final biosynthetic step of the aroma compounds.Here,we review recent progress in research on the plant-derived enzymes producing chiral aroma compounds,and their changes in response to environmental factors.The chiral aroma enzymes that have been reported produce(R)-linalool,(S)-linalool,(R)-limonene,and(S)-limonene,etc.,and these enzymes are found in various plant species.We also discuss the origins of enantioselectivity in the plant-derived enzymes producing chiral aroma compounds and summarize the potential use of plants containing enzymes producing chiral aroma compounds for producing chiral flavors/fragrances.

Blow-Up Result for a Semi-Linear Wave Equation with a Nonlinear Memory Term of Derivative Type

In this paper,we study the blow-up of solutions to a semi-linear wave equation with a nonlinear memory term of derivative type.By using methods of an iteration argument and di erential inequalities,we obtain the blow-up result for the semi-linear wave equation when the exponent of p is under certain conditions.Meanwhile,we derive an upper bound of the lifespan of solutions to the Cauchy problem for the semi-linear wave equation.

Effect of Inoculation Rhizobium and Response of Soybean-Rhizobium System to Insoluble Phosphate

In order to produce efficiently symbiotic system in acid soils which could be used for the recovery of insoluble phosphate soil and improvement of the fertility, etc., host range of Rhizobium was isolated from the root nodules of wild and cultivated soybean varieties growing in south China, evaluated the effects of Rhizobium on enhance nitrogen fixing activities, phosphorus(P), nitrogen(N) uptakes, growth and yield of soybean under pot and field conditions. The results showed that combined Rhizobium inoculation was more effective than individual Rhizobium inoculation. The combined Rhizobium of CW54 strains had the highest effect, nodule number, nodule weight and nodule nitrogenase activity were markedly stimulated as compared to those of the control U110, respectively. The nitrogen contents in the plants treated with CW54 strains were significantly increased by 43.2% as compared to those of the control U110 in Al-P soil, but statistical significance was not observed in Fe-P soil. By contrast, inoculation with CW54 significantly enhanced phosphorus uptake of plant in Fe-P soil than that in Al-P soil. The effects of inoculation of CW54 strains in a field condition were similar to those of in a pot condition. The total biomass and yield in the plants treated with CW54 strains were significantly increased by 86.4% and 51.4% as compared to those of the control at the time of soybean podding in a field condition, respectively. These results suggested that inoculation Rhizobium was beneficial for soybean nutrient uptake, growth and yield under insoluble phosphate soil conditions.

The Construction of Cold-Chain Logistics Park of Agricultural Products in Sanshui from Two-stage Perspective

This paper firstly analyzed the operation model,market positioning,market demand forecast as well as market competition and challenges,park site selection,and transportation conditions for construction of the Cold-Chain Logistics Park of Agricultural Products in Sanshui.Then,it presented the overall planning scheme for construction of the Cold-Chain Logistics Park of Agricultural Products from a progressive two-stage perspective of overall planning and stage-by-stage implementation.The first stage mainly performs the function as a transaction platform of agricultural products and meanwhile provides customers with agricultural products storage and inspection services.The second stage adds value-added services such as distribution processing,modified atmosphere storage,freezing and refrigeration,market price information distribution,E-commerce of agricultural products and personalized services.It is expected to provide references and suggestions for the construction of the Cold-Chain Logistics Park of Agricultural Products.

The Thinking Path of Deepening Transformation and Innovation of Chinese Banking Industry under the Background of “New Normal” Economy

This paper analyzes the three big impact in the development of Chinese banking industry and discusses the limitations of financial innovation of Chinese banking industry.The results showed that:(1)deepening the banking system innovation to adapt to the new situation;(2)improving customers’experience by deepening model innovation of the internet financial;(3)improving intensive of bank branch operation and the intelligent of network service with the aid of informatization;(4)Providing individualized,characteristic and differentiated services for high-quality customers of banks and enhancing customer value through lightweight network outlets;and(5)Adapting to the development of new entity economy by comprehensive management,optimizing the operation mode of outlets,and strengthening the supply side reform of commercial banks themselves.

The Curriculum Problem Is the Basis of Model School Construction

This thesis makes vocational school demonstration project as a starting point. It is a combination of the last ten years of literature on model school building. From the perspective of the audience, it is combing the characteristics of the project due to the inherent requirements of the decision-making level, which is leading to its subordinate business operating space that has very limited level and then free the needs of the audience. It believes that if it relaxes contemplation perspective, consolidates construction of the curriculum, or it is a prime choice related to project management.

Research on Heterogeneous Network Security Devices

With the continuous development of network applications, network security equipment type and the number of growing, heterogeneous security devices is difficult synergistic, massive alarm information is difficult to deal and the lack of an effective response to the treatment process as well as on security incidents. To solve these problems, the proposed design of a unified management platform for a variety of heterogeneous network security equipment. A brief introduction for the main functions of the platform.The article proposed a traffic handling mechanisms of heterogeneous security devices, allowing the platform to support heterogeneous security devices.

Role of histone deacetylase CsHDA8 in regulating the accumulation of indole during the oolong tea manufacturing process

Aroma is an important quality-related trait of oolong tea.The compounds contributing to oolong tea aromas are mainly produced in response to stress during the enzyme-active stage of the tea manufacturing process.Epigenetic regulation affects stress-induced secondary metabolite production;however,the mechanisms regulating oolong tea aroma compound formation are unclear.In this study,the effect of histone acetylation on indole formation,an important aroma of oolong tea,was revealed and CsHDA8 was identified as a candidate regulator.Additionally,CsHDA8,which was localized in the nucleus and cytoplasm,may function as a histone deacetylase.Moreover,the binding of CsHDA8 to CsTSB2 promoter related to indole decreased during a wounding treatment,which resulted in increased histone acetylation and gene expression.The study results may clarify the regulatory effects of histone acetylation on the formation of tea secondary metabolites,with potential implications for studies on the epigenetic regulation in other non-model horticulture plants.