Spiny burs of Castanea mollissima Blume (Chinese chestnut) are usually discarded as industrial waste during post-harvesting processing. The objective of this study was to establish an extraction and isolation procedure for tannins from chestnut burs, and to assess their potential antioxidant activity. Aqueous ethanol solution was used as extraction solvent, and HPD 100 macroporous resin column was applied for isolation. The influence of solvent concentration in the extraction and elution process on extraction yield, tannins and polyphenols content, as well as antioxidant potential, including DPPH and ABTS radical scavenging ability, reducing power ability and cellular antioxidant ability were assessed. In both the extraction and isolation process, 50% aqueous ethanol led to superior total tannins and polyphenols content as well as significantly higher antioxidant activity. In addition, the antioxidant activity and the total tannins content in extracts and fractions had a positive linear correlation, and the predominant components responsible for antioxidant activities were characterized as hydrolysable tannins. To the best of our knowledge, this is the first report on the enrichment of tannins from burs of C. mollissim using macroporous resin chromatography, and to assess the cellular antioxidant activity of them.

Visual illusion is a new computer abstract art style in information age. Depending on digital design technology, applying digital image with visual illusion, digital jacquard fabric featuring visual illusion effect is produced based on the application of half-backed woven structure. Key technology is that using digital layered-combination design mode and backed structure design method, the structure of jacquard fabric can be designed to express entire color changes of yarn. If random covering effect among weft yarns were realized in compound fabric structure, delicate and random color transition can be produced on face of fabric. In this paper, the design principle and method of visual illusion effect digital jacquard fabric were introduced and analyzed with proper design illustrations and objective results. It is envisaged that this study has good reference to design innovation of digital jacquard fabric.

Some pure and abstract designs are always taught to be made by man. Actually such enormous shapes are found in nature, where there are complicated varieties of patterns derived from simple natural structures. Studying on nature on some moments such as volcano blasts, landscape sceneries or inner parts of wood can be a fascinating design done by the creator. Some African textile designs are designed based on these natural design structures. Other design samples can also be taken from animals skins pattern, plants, or natural phenomena such as water and sky. This paper introduces some methods to produce textile design from available objects in our surrounding such as inner parts of trees, landscapes viewed from the top or volcano blasts using as alternative sources. These natural phenomena are also used as an input for a real color adventure for textile design. Snapping photos of these amazing structures, textile designers can design textile fabrics based on these structures for upholstery use.

Research on innovation design of visual 2.5D effect black-and-white digital jacquard fabric is carried out based on layered-combination design mode and design method of full-color compound structure. Black-and-white digital jacquard fabric designed by combining two digital patterns together can express two patterns on face of fabric at same time. As long as lustrous yarns are employed to produce jacquard fabric with full-color compound structure, and juxtaposed colorless yarns cannot be covered by each other, black-and-white digital jacquard fabric could express good grey shading effect. Viewed from different angle, two overlapping patterns will show figured shot effect so-called visual 2.5D effect. In this paper, design principle and method of visual 2.5D effect black-and-white digital jacquard fabric were introduced clearly with proper design illustrations. It provides good value for design innovation of black-and-white digital jacquard fabric.