Broccoli leaf powder as an attractive by-product ingredient: effect on batter behaviour,technological properties and sensory quality of gluten-free mini sponge cake

Broccoli by-products, in particular leaves, are rich sources of nutritional and bioactive components thus could constitute a valuable food additive. Although an upsurge in quantity of gluten-free products is observed further studies are required on improvement of their nutritional quality and palatability. This study aimed to investigate the influence of broccoli leaf powder (BLP) on dough behaviour, and technological characteristics and sensory quality of gluten-free mini sponge cake (GFS). Broccoli leaf powder replaced an equivalent amount (2.5%, 5%, 7.5%; w/w) of corn and potato starches in GFS formulation. Applied BLP increased the instrumental firmness of GFS but sensorial attributes (elasticity, crustiness, mastication and adhesiveness) were similar to the control. All broccoli GFS were vividly green, had small size pores properly distributed. Among them, sample with 2.5% BLP was distinguished for its desirable sensory quality, despite a slightly perceived cabbage aroma and taste. Moderate amount of BLP allows to preserve a good quality GFS improving its attractiveness and palatability.     

Two-dimensional nanomaterials for photocatalytic water disinfection: recent progress and future challenges

Photocatalysis has received ever-growing attention as a promising alternative to traditional water treatment technologies for waterborne biohazard inactivation. Due to unique optical, electronic, physicochemical properties and feasibility of functional architecture assembly, two-dimensional (2D) nanomaterials have become important in developing novel photocatalysts. This review summarizes the recent progress in configuring nanostructures with 2D materials as building blocks for photocatalytic water disinfection. In this review, five categories of 2D nanomaterials, that is, graphene, graphitic carbon nitride, 2D metal oxides and metallates, metal oxyhalides and transition metal dichalcogenides, for photocatalytic pathogen inactivation are introduced. First, the synthesis process, nanostructure engineering and disinfection performance of 2D-based photocatalysts are reviewed in categories. In the following section, the bacteria destruction mechanism based on the generation and roles of reactive species (RSs) is presented. Moreover, the effects of the chemical characteristics of the water matrix on photocatalytic bactericidal performance are discussed. Finally, the challenges regarding the development and application of 2D-based photocatalysts for highly efficient water sterilization are highlighted. © 2018 Society of Chemical Industry     

乳清发酵酒消毒技术研究及其应用

乳清发酵酒产品是近年来发展起来的新产品。在生产实践中,公司试验研究了乳清发酵酒生产工艺中的消毒技术,按工艺流程的先后顺序,研究了原料消毒、生产环境消毒、生产设备消毒等内容。生产实践证明,这些方法或技术措施的运用,保证了乳清发酵酒的品质,且口味纯正、质量稳定。主要阐述了乳清发酵酒生产过程的消毒技术和措施。     

超声波对工业用水杀菌消毒效果的研究

研究了超声波功率,作用时间以及与次氯酸钠协调作用对工业用水杀菌消毒效果。结果表明:50 W的超声波对藻类叶绿素合成量的抑制率达到了68.75%;低频率超声波对水中微生物团聚体的机械分散性能好于高频率的超声波,超声波与次氯酸钠协同作用既可提高灭菌效果,又可减少75%杀菌剂的使用量。     

关于餐馆消毒柜使用的经济学分析

目前,消毒柜是众多餐馆的必备消毒设备之一。但调查显示,由于使用成本等方面的原因,部分消毒柜往往成为摆设,没有起到应有的作用。文章从经济学角度对餐馆消毒柜使用问题进行分析。     

制肥副产物制备铝合金抛光专用酸可行性研究

以制肥副产物为研究对象,对其制备铝合金抛光专用酸进行可行性研究。研究内容:(1)分析制肥副产物主要成分含量;(2)以制肥副产物为原料制备铝合金抛光专用酸;(3)进行抛光试验验证其抛光效果。结果表明:制肥副产物中五氧化二磷含量高达49%以上,且含有少量重金属元素及杂质,作为原料制备出的铝合金抛光专用酸抛光效果较好。得出结论:制肥副产物可作为制备铝合金抛光专用酸原料使用。     

Incorporation of fish by-product into the semi-continuous anaerobic co-digestion of pre-treated lignocellulose and cow manure,with recovery of digestate's nutrients

Norway's fish processing industry generates large amounts of fish waste every year. The high-risk waste fraction with most of its oil removed has not yet been tested for energy production. The stability of an anaerobic digestion process that incorporates this material with steam exploded Salix and cow manure was tested using mesophilic, semi-continuous laboratory-scale digesters. The effects of recycling the liquid digestate fraction were also investigated. The removal of ammonium (NH₄⁺) and phosphate (PO₄³⁻) from the rejected digestate using struvite precipitation and bentonite adsorption were tested to generate a nutrient-enriched, final solid fertiliser. Adding 20% fish by-product (volatile solids basis) increased methane yields by 35%, while recycling the digestate caused a slight increase. The NH₄⁺–N levels reached 4–5 g l⁻¹ in the reactors with recirculation and fish feed. Although these levels may threaten methanogenesis, the stability of the process was maintained during the entire period due to the good balance between the lignocellulose, proteins and fats provided by the co-digestion mixture and the positive effects of recirculation. The NH₄⁺ and PO₄³⁻ were successfully removed from the rejected liquid digestate. The reductions using struvite reached 87% and 60% (pH 9.5 and Mg²⁺:NH₄⁺:PO₄³⁻ ratio of 1.2:1:1), while bentonite achieved 82% and 52%, respectively.