A cross validation of Consumer-Based Brand Equity (CBBE) with Private Labels in Spain

Molinillo,S., Ekinci, Y., Japutra, A. (2014)'A cross validation of Consumer-Based Brand Equity (CBBE) with Private Labels in Spain'. in Martínez-López, Gázquez-Abad, J.C. and Sethuraman, R. J.A. (eds.) Advances in National Brand and Private Label Marketing. Second International Conference, 2015. Springer Proceedings in Business and Economics, pp. 113-125In recent years a number of Consumer-Based Brand Equity (CBBE) models and measurement scales have been introduced in the branding literature. However, examinations of brand equity in Private Labels (PL) are rather limited. This study aims to compare the validity of the two prominent CBBE models those introduced by Yoo and Donthu (2001) and Nam et al. (2011). In order to test the models and make this comparison, the study collected data from 236 respondents who rated private labels in Spain. A list of 30 different fashion and sportswear PL was introduced to respondents. These brands do not make any reference to the retail store in which they are sold. Research findings suggest that the extended CBBE model introduced by Nam et al. (2011) and Ciftci et al. (2014) is more reliable and valid than Yoo and Donthu’s model for assessing PL. Theoretical contributions and managerial implications are discussed.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Influence of individual and social values on customer engagement in luxury thermal spa hotels: The mediating roles of perceived justice and brand experience

This study aims to examine how values (i.e., individual and social values) influence customer engagement after managing a service failure in the thermal spa hotel context, and the mediating roles of perceived justice and brand experience. The data was collected from a survey of guests of luxury thermal spa hotels in Portugal, and the research model was assessed using partial least squares structural equation modeling. The results show that individual values affect perceived justice and brand experience, which in turn contribute to a higher level of customer engagement. Brand experience is a better mediator of the relationship between individual values and customer engagement than perceived justice. The novelty of this study is highlighted by the mediating effects of perceived justice and brand experience on the relationship between individual values and customer engagement.info:eu-repo/semantics/publishedVersio

Microwave-Assisted Rearrangement of Costunolide Catalyzed by Palladium(II)

The structure of costunolide was modified before conducting the Cope rearrangement under thermal conditions. This modification was undertaken to block the highly reactive Michael acceptor α-methylene-γ-lactone, thus preventing side reactions at high temperatures. In this work, the reaction was performed under heating or microwave irradiation using costunolide, not its modified version. Rates of Cope reactions catalyzed by palladium(II) assisted by microwave were substantially enhanced. The rearrangements of costunolide to elemanolide, eudesmanolides, and germacranolide were catalyzed by palladium acetate, bis(benzonitrile)palladium dichloride, and a mixture of both organometallics. Rates of microwave promoted rearrangements of costunolide were six times faster than the reactions assisted by heating. The best success rate for elemanolide (7) was obtained using a mixture of Pd(OAc)2 and (NCPh)2PdCl2. In this case, compound 7 was obtained in a yield of 34%, while the other sesquiterpene lactones were formed only in trace amounts. The reaction products were isolated using semi-preparative high performance liquid chromatography and further purified through sequential analytical high performance liquid chromatography. Bioactivity profiles that used etiolated wheat coleoptiles were conducted for compounds 6, 7, and 9. The tested compounds presented very high phytotoxicity, with inhibition up to 97%

A cross validation of Consumer-Based Brand Equity: driving customer equity in retail brands

The Consumer-Based Brand Equity (CBBE) literature has, in recent years, introduced various CBBE models. This study aims to compare the validity of the two prominent CBBE models in the retail industry; those introduced by Yoo and Donthu (2011) and Nam, Ekinci and Whyatt (2011). In order to make this comparison, the study collected data from Turkish (n = 285) and Spanish respondents (n = 236) who had experience with global fashion brands and Private Labels (PL). The findings of the study suggest that Nam et al.'s (2011) CBBE model has better validity than Yoon and Donthu's (2011) model. When brand awareness is included in Nam et al.'s model, the psychometric properties of the model improve and outperform the two models. The study discusses the theoretical contributions and managerial implications of the research

Bio-guided optimization of the ultrasound-assisted extraction of compounds from Annona glabra L. leaves using the etiolated wheat coleoptile bioassay

A bio-guided optimization of the extraction of bioactive components from Annona glabra leaves has been developed using the etiolated wheat coleoptile bioassay as the control method. The optimization of an ultrasound-assisted extraction of bioactive compounds using allelopathy results as target values has been carried out for the first time. A two-level fractional factorial experimental design was applied to optimize the ultrasound-assisted extraction. The solvent was the extraction variable that had the most marked effect on the resulting bioactivity of the extracts in the etiolated wheat coleoptile bioassay. Extraction time, extraction temperature and the size of the ultrasonic probe also influenced the bioactivity of the extracts. A larger scale extraction was carried out in the next step in the allelopathic study, i.e., the isolation of compounds from the bioactive extract and chemical characterization by spectroscopic techniques, including NMR. Eight compounds were isolated and identified from the active extracts, namely two steroids (β-sistosterol and stigmasterol), five diterpenes with the kaurane skeleton (ent-kaur-16-en-19-oic acid, ent-19-methoxy-19-oxokauran-17-oic acid, annoglabasin B, ent-17-hydroxykaur-15-en-19-oic acid and ent-15β,16β-epoxy-17-hydroxy-kauran-19-oic acid) and the acetogenin asimicin. The most active compound was annoglabasin B, which showed inhibition with values of -95% at 10-3 M, -87% at 5 - 10-4 M and greater than -70% at 10-4 M in the etiolated wheat coleoptile bioassay

Field efficacy of a bioherbicide mimic (DiS-NH2) in a nanoparticle formulation for weed control in durum wheat

BACKGROUND: Weed-resistance phenomena have increased dramatically in recent years. Bioherbicides can offer a sustainablealternative to chemical weed control but they often have low water solubility and therefore low efficacy in the field. Theresearch reported here represents the first study on the field efficacy against weeds of a nanoencapsulated bioherbicide mimicof aminophenoxazinones, namely DiS-NH 2 (2,20-disulphanediyldianiline). Field experiments were carried out across three dif-ferent locations to evaluate the bioherbicide disulphide mimic at standard (T1, 0.75 g m−2 ) and double (T2, 1.5 g m−2 ) doseswhen compared to no weed control (NC) and chemical weed controlled (PC) in durum wheat.RESULTS: The nanoencapsulated bioherbicide displayed better soil permeability than the free compound and also showedlower ecotoxicity on comparing the toxic doses on the Caenorhabditis elegans nematode model. It was found that T2 gavethe best performance in terms of phytotoxicity (−57% weed biomass when compared with NC) and crop yield enhancement(3.2 versus 2.2 Mg ha−1 grain yield), while T1 showed comparable results to PC. T1 and T2 did not cause shifts in weed commu-nities and this is consistent with a broad spectrum of phytotoxicity. Moreover, the nanoparticle formulation tested in this studyprovided stable results across all three locations.CONCLUSION: It is reported here for the first time that a nanoencapsulated DiS-NH 2 bioherbicide mimic provided an efficientpost-emergence and contact bioherbicide that can control a wide range of weed species in durum wheat without damagingthe crop. The mimic also has low ecotoxicity and improved soil permeability.© 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry

Social media usage among wine tourism DMOs

Social media is an important tool for tourism destination promotion. The usage and the contents published on these platforms have an important role in visitors’ decision-making process. Information and communication technologies are changing DMOs’ markets and communication paradigm, since they allow the interaction between these organizations, visitors, and stakeholders. Therefore, social media are increasing their relevance on DMOs’ marketing strategies. This purpose of this study is to analyze comparatively social media platforms’ usage by six wine tourism DMOs. The results were provided by the analysis of secondary data available on these platforms and DMOs posts on the four most popular social media platforms to tourism industry: Facebook, Instagram, Twitter, and YouTube. Results indicate that DMOs use their official accounts on these platforms on different ways. This study also reveals that Facebook is more interactive than other platforms, and YouTube achieves less engagement levels.info:eu-repo/semantics/publishedVersio

The Joint Action of Sesquiterpene Lactones from Leaves as an Explanation for the Activity of Cynara cardunculus

The work described herein is a continuation of a previous study centered on the bioprospect of cardoon (Cynara cardunculus) leaf extracts through the isolation of secondary metabolites with phytotoxic activity. Chromatographic fractionations of the ethyl acetate extract and spectroscopic analysis showed that the majority of the components were sesquiterpene lactones. Of these compounds, aguerin B, grosheimin, and cynaropicrin were very active on etiolated wheat coleoptile, standard target species, and weed growth. The joint action of binary mixtures of these three active sesquiterpene lactones and one nonactive compound (11,13-dihydroxy-8-desoxygrosheimin) was studied. The activities of fixed-ratio mixtures were assessed on wheat coleoptile. The results can be interpreted with respect to a reference model by considering dose−response analyses and isobolograms with linear regression analyses. A total of 17 binary mixtures at different levels of inhibition (ED25, ED50, and ED75) were studied, and predominantly they responded additively (25). Deviations from additivity included seven synergistic responses and two antagonistic responses. The joint action of major sesquiterpene lactones isolated from C. cardunculus can explain the activities observed in extracts and fractions. The results reported here reiterate the utility of the wheat coleoptile bioassay as a quick tool to detect potential synergistic effects in binary mixtures

Evidence for an Allelopathic Interaction Between Rye and Wild Oats

Allelopathy is a biological phenomenon in which an organism produces one or more biochemicals that influence the growth, survival, and reproduction of other organisms. Allelopathy has been the subject of a great deal of research in chemical ecology since the 1930s. The characterization of the factors that influence this phenomenon has barely been explored, mainly due to the complexity of this area. The main aim of the research carried out to date has been to shed light on the importance of these interactions in agroecosystems, especially in relation to the interactions between crops and weeds. Herein we report the characterization of a complete allelochemical pathway involving benzoxazinones, which are known to participate in allelopathic plant defense interactions of several plants of high agronomic interest. The production of the defense chemicals by a donor plant (crop), the route and transformations of the chemicals released into the environment, and the uptake and phytotoxic effects on a target plant (weed) were all monitored. The results of this study, which is the first of its kind, allowed a complete dynamic characterization of the allelopathic phenomenon for benzoxazinones

Allelopathy of Bracken Fern (Pteridium arachnoideum): New Evidence from Green Fronds, Litter, and Soil

The neotropical bracken fern Pteridium arachnoideum (Kaulf.) Maxon. (Dennstaedtiaceae) is described as an aggressive pioneer plant species. It invades abandoned or newly burned areas and represents a management challenge at these invaded sites. Native to the Atlantic Forest and Cerrado (Tropical Savanna) Brazilian biomes, P. arachnoideum has nevertheless become very problematic in these conservation hotspots. Despite some reports suggesting a possible role of allelopathy in this plant’s dominance, until now there has been little evidence of isolated and individually identified compounds with phytotoxic activities present in its tissues or in the surrounding environment. Thus, the aim of this study was to investigate the allelopathic potential of P. arachnoideum by isolating and identifying any secondary metabolites with phytotoxic activity in its tissues, litter, and soil. Bioguided phytochemical investigation led to the isolation and identification of the proanthocyanidin selligueain A as the major secondary compound in the green fronds and litter of this fern. It is produced by P. arachnoideum in its green fronds, remains unaltered during the senescence process, and is the major secondary compound present in litter. Selligueain A showed phytotoxic activity against the selected target species sesame (Sesamum indicum) early development. In particular, the compound inhibited root and stem growth, and root metaxylem cell size but did not affect chlorophyll content. This compound can be considered as an allelochemical because it is present in the soil under P. arachnoideum patches as one of the major compounds in the soil solution. This is the first report of the presence of selligueain A in any member of the Dennstaedtiaceae family and the first time an isolated and identified allelochemical produced by members of the Pteridium species complex has been described. This evidence of selligueain A as a putative allelochemical of P. arachnoideum reinforces the role of allelopathy in the dominance processes of this plant in the areas where it occurs