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1 – 2 of 2Mayengbam Premi Devi, Manas Ranjan Sahoo, Aparna Kuna, Madhumita Dasgupta, Sowmya Mandarapu, Prahlad Deb and Narendra Prakash
This study aims to examine the effects of various physical and chemical pre-treatments on antioxidant properties of tree bean (Parkia roxburghii G. Don) in combination with…
Abstract
Purpose
This study aims to examine the effects of various physical and chemical pre-treatments on antioxidant properties of tree bean (Parkia roxburghii G. Don) in combination with storage conditions.
Design/methodology/approach
The whole pods and seeds of tree bean were treated with gamma rays (γ-rays), sodium hypochlorite (NaOCl), chlorine dioxide (ClO2) and hydrogen peroxide (H2O2) and stored at room temperature (RT, 25°C) for 30 days. The physical and chemical pre-treated seeds and pods were compared with the same stored at RT and refrigerated storage at 4°C and −20°C. During storage, physical (moisture content) and antioxidants like total phenolics, ascorbate content, reduced glutathione, total flavonoids, along with free radical scavenging activities (FRSA) were measured.
Findings
Chemical pre-treatments with NaOCl, ClO2 and H2O2 significantly accelerated (p = 0.05) the total phenolics (1.9 mg/g FW in seeds and 2.4 mg/g FW in pods), flavonoids content (0.3 mg/g FW each in seeds and pods) and ABTS activities (73.3 per cent in seeds and 92.3 per cent in pods) at 30 days of storage. A significant decrease (p = 0.05) in ascorbate content (6.1 mg/g FW in seeds and 3.5 mg/g FW in pods), reduced glutathione (5.1 mg/g FW in seeds and 3.7 mg/g FW in pods), FRAP (0.3 mg equi Fe/g FW in seeds and 0.4 mg equi Fe/g FW in pods) and reducing power (1.8 mg/g FW in seeds and 3.7 mg/g FW in pods) was observed under all the treatments at 30 days of storage. However, DPPH increased under γ-irradiation and decreased under chemical pre-treatments, storage at RT and refrigerated storage. The overall result showed that pre-treatment of H2O2 at 10-20 mM maintains antioxidants and radical scavenging activities in tree bean during storage.
Originality/value
The application of H2O2 at 10-20 mM prior to storage of tree bean maintains the physical, antioxidant properties and FRSA in tree bean seeds and pods as compared to natural ambient conditions. Hence, this technique will help in improving the keeping quality of this legume and avoid spoilage after harvest for an extended period.
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Keywords
The purpose of this paper is to integrate impostor syndrome and leadership research to identify antecedents of impostor syndrome, their impact on sustainable leader behaviors. The…
Abstract
Purpose
The purpose of this paper is to integrate impostor syndrome and leadership research to identify antecedents of impostor syndrome, their impact on sustainable leader behaviors. The paper also postulates the moderating effect of mindfulness and leader member exchange on impostor syndrome and sustainable leader behaviors, respectively.
Design/methodology/approach
The paper relies on an integrative approach of literature review on impostor syndrome and leadership. After identifying gaps in impostor syndrome research and its intersectionality with the constructs of contextual leadership theory, an integrative conceptual framework was formulated incorporating antecedents, consequences and moderators of impostor syndrome.
Findings
Three antecedents of impostor syndrome were identified from the literature, namely, gender, family/social role expectation and personality traits. Additionally, this paper also unearths contextual factors as yet another antecedent to impostor syndrome. Negative impact of impostor syndrome on leader behaviors such as managerial decision-making, innovative work behavior (IWB) and organizational citizenship behavior (OCB) were established by connecting those to the three primary characteristics of impostor syndrome, namely, low self-efficacy, fear of failure and perceived fraudulence, respectively. Finally, the paper also posits the moderating role of leader member exchange and mindfulness and proposes mindfulness training as an effective intervention for impostor syndrome.
Research limitations/implications
This being a conceptual paper will benefit from empirical studies that corroborate theoretical posits. The scope of studying the effect of impostor syndrome on sustainable leader behavior was limited to three major variables, namely, managerial decision-making, IWB and OCB. Thus, it calls for a more elaborate model of impostor syndrome including other relevant leader behaviors.
Practical implications
The model when applied in organizational context addresses the need for mindfulness training to reduce the effect of impostor syndrome among leaders. Leaders will exhibit sustainable behaviors when provided with the right kind of training.
Originality/value
The study attempts to integrate the two independent constructs, impostor syndrome and leadership to establish a novel and meaningful connection and throws light to the unaddressed antecedents, consequences and moderators of its impact on sustainable leader behaviors. From learning and development practitioners’ perspective, it also signifies the effectiveness of mindfulness training among employees’ personal and professional development.
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