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Bacterial exopolysaccharides (eps) have fascinating chemical compositions, properties and structures which could be used in the modification of natural fibres. Bacterial eps have therefore been used to modify plant cellulose fibre surface and impart desired properties. The purpose of this paper is therefore to investigate the influence of gin trash cultured bacteria eps on the physical and structural properties of cotton fibres.

Gin trash soil sample was collected from a ginnery in Kenya, and physiochemical and microbial characterization was done. The soil sample was then fermented for 24 h before being used to treat raw cotton fibres at varied conditions of temperature, pH and treatment time periods. Physical and structural properties of the treated fibres were then determined using USTER HVI-1000 M700, Fourier transform infrared, scanning electron microscope (SEM) and X-ray diffraction (XRD) and compared with those of the raw fibres.

The bacteria broth treated fibres were found to have increased in strength, spinning consistency index, elongation and fineness by 25.44, 24.30, 11.70 and 3.60%, respectively. The variations were attributed to interactions of bacterial eps with cotton cellulose through hydrogen bonding. SEM and XRD analysis revealed an increase in fibre surface roughness and crystallinity, respectively.

Bacterial eps have been used to modify plant cellulose fibre surface and impart desired properties. Eps producing bacteria have been isolated from different habitats such as saline water, soil samples, food wastes and petroleum-contaminated soil. To the best of the authors’ knowledge, bacterial eps cultured from gin trash soil sample for modification of cotton fibres have however not been previously done, hence the originality of the current study.

The purpose of this paper is to investigate the efficacy of bacterial exopolysaccharides (Eps) in reactive black 5 (RB5) textile dye wastewater bioremediation.

The Eps were produced by bacteria isolated from cotton gin trash soils collected from different cotton-growing regions in Kenya for comparison purposes. A broth medium reconstituted using molasses was assessed for its capacity to produce the Eps. RB5 textile dye wastewater was optimized for dye removal under different temperatures, times and molasses concentrations. Dye removal was studied by Lovibond-Day Light Comparator, UV–Vis spectrophotometer and FTIR.

It was found that cotton gin trash soils contained Eps-producing bacteria. Three of the Eps studied were found to have the capacity to remove at least 80% of the dye from the wastewater.

This research did not assess the efficacy of the RB5 dye removal from the wastewater by mixtures of the Eps.

Bioremediation of textile dye wastewater with Eps produced by bacteria cultured from cotton gin trash soil is significant because it will offer an effective and cleaner alternative to the chemical coagulants.

Alternative treatment of textile wastewater with the Eps would result in safer water being released into the water bodies as opposed to the chemically treated wastewater that contains remnant chemicals.

Research on the use of Eps produced by bacteria isolated from cotton gin trash soils for removal of RB5 dye from textile wastewater has not been done before.

Bales of cotton run through the gins and textile mill instruments, stick to them and make it cumbersome for the ginning mill workers. This is so because more time and money have to be invested in cleaning these instruments. The stickiness of cotton causes health hazards to the workers, decreases the yarn quality and economic loss to the textile industry. The effect of cotton stickiness on textile ginning, various methods for cotton stickiness detection and the steps for reduction are discussed.

The different methods that are available for detecting and measuring cotton stickiness are described. The sugars that cause stickiness are either of plant origin (physiological sugars) or from the feeding insects (entomological origin). The methods for stickiness detection and reduction are discussed under physical, chemical and biological categories.

This review suggests possible ways to mitigate cotton stickiness.

One of the major issues of the textile industry is honeydew-contaminated cotton stickiness. However, there are few papers on detection methods for analyzing honeydew cotton stickiness along with the approaches to reduce stickiness. This paper summarizes different methods along with a study for detection as well as reduction of cotton stickiness.

Image processing has been used as a tool to determine the trash content in cotton webs. The experiments showed that in particular seed coat particles are difficult to separate from the cotton during cleaning processes whereas neps, leaf and wooden fragments can easily be removed. A correlation between the number of seed coat particles and USTER‐imperfections in the yarn has been found.

This study aims to investigate the effect of process parameters of blow room machines on openness degree and quality of cotton tufts in a blow room.

For this purpose, an experimental Box–Behnken design (BBD) was used, and the process parameters were the angles of the grid bars underneath the opening rollers of CVT3 beaters and the distance between feed roller of the first opening roller of CVT3.

It was found that the cotton tuft openness increased by increasing the angles of grid bars and by decreasing the distance between the feed roller and first opening roller on CVT3 beater. Further, the optimization procedure showed that an optimum value of cotton tuft openness (in laser method) was determined for specific levels of the process parameters.

The originality of this investigation is that it showed the individual effects and interactions of the most important factors in two tufting machines instead of only one machine. This study is important because it helps cotton yarn spinners to improve the quality of the final yarns by optimizing the levels of tuft openness which in turn improves fiber cleaning.

The textile sector struggles with cotton stickiness from honeydew contamination. It hurts agriculture and marketability. This study aims to examine how bacterial enzymes could reduce honeydew-contaminated cotton adherence in textile businesses sustainably.

Enzyme was extracted from bacteria isolated from the fermented bamboo shoots “Lung siej”. The enzyme was tested for α-glucosidase using p-nitrophenyl-α-D-glucopyranoside as a substrate. Design of experiments determined enzyme activity temperature and reaction time. Laboratory-prepared artificial honeydew was added to ginning mill cotton to show honeydew contamination. After enzyme treatment, sticky cotton was tested for microscopic examination, ultraviolet (UV), Benedict’s, Elsner colorimetric, high volume instrument (HVI) and viscosity tests.

The bacterial isolate is characterized as Lysinibacillus sp. as confirmed by 16S rRNA gene sequencing. The enzyme extracted was identified as α-glucosidase. The ideal temperature and reaction time for enzymatic activity were 32 °C and 35 min, respectively, using central composite design. The microscopic examination, UV test, Benedict’s test, Elsner colorimetric test, HVI test and viscosity test showed that bacterial enzyme treatment reduced cotton fiber adherence.

Although few patents have examined the effect of yeast enzymes, to the best of the authors’ knowledge, a bacterial enzyme is investigated for the first time to reduce the adhesion of honeydew-contaminated cotton.

The learning outcomes are as follows: first, identify the characteristics of born-global SMEs, and how these characteristics facilitate their global expansion shortly after the company’s inception. Second, demonstrate that companies work with limited resources, typically and notably newly established companies, and that these resources should be allocated according to a carefully determined strategy. The resources focussed on in this case pertain to marketing. Third, examine entrepreneurial marketing and its various manifestations. An understanding of how this type of marketing is used by companies for international expansion is expected. Fourth, assess the role of digital marketing and how social media forms an important part of digital marketing. Particular attention is paid to the use of digital marketing, notably social media, in international expansion. Fifth, develop critical thinking skills with respect to strategic business decisions, such as whether to expand a business into foreign markets or to consolidate locally; and how best to penetrate foreign markets, given the nuances and complexities specific to these markets.

This teaching case is about The Duchess, a recently developed and launched virgin alcohol-free and sugar-free gin and tonic beverage. The adult soft drink was originally launched in South Africa, and just 18 months later became available in international markets (the UK and Belgium). The founders and protagonists of the case, Johannes le Roux and Inus Smuts, face the dilemmas of creating a competitive local brand while also looking to access new markets and internationalise as a born-global firm.

The target audience for this case comprises students enrolled in tertiary business education programmes who have already had some sort of work experience and hands-on exposure to real-world business. MBA and EMBA students, as well as those enrolled in post-graduate studies specific to marketing, international commerce and entrepreneurship, would be suitable candidates.

Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.

CSS 8: Marketing

In this chapter, the authors examine interdependence within and between routines by focusing on an aspect of routines that has often been taken for granted: boundaries. Logically, boundaries are needed to individuate and separate the entities that are being related or compared. Using observations of passenger service on a trans-Atlantic flight, the authors demonstrate that boundaries of routines are fluid and multiple. By understanding boundaries, the authors are able to better understand interdependence between actions within one routine and between multiple routines. The authors discuss how understanding boundaries complements existing theoretical perspectives on routine dynamics.

Using in‐depth life history interviews, this paper examines how workingclass black workers get jobs. It also offers an analysis of the ways networks generate resource information which then passes through a series of connections that in form those connected about available jobs, the application process, what personal information is required to get the job, employer expectations, the application process, wage rates and who will make the hiring decision. Black city residents have repeatedly had to reorganize their strategies for economic survival simultaneously evaluating what sort of information is passing through their net works about available jobs and what is re quired to get the job.