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Article
Publication date: 23 March 2012

Jyoti Srivastava, Sarvesh Kumar and Padma S. Vankar

The purpose of this paper is to study the structure‐activity correlation of four medicinal plants – Ocimum basilicum L., Piper betle L., Grewia asiatica L., Lantana camara L. in…

Abstract

Purpose

The purpose of this paper is to study the structure‐activity correlation of four medicinal plants – Ocimum basilicum L., Piper betle L., Grewia asiatica L., Lantana camara L. in crude methanolic extract. These plants have been used in Ayurvedic preparation as alternative medicine. The contents of phenolic compounds (flavonoids, anthocyanin) and antioxidant capacities were evaluated.

Design/methodology/approach

Folin‐Ciocalteu method was used for the analysis of the phenolic compounds. Total flavonoids were also evaluated. DPPH, ABTS+, FRAP and H2O2 assays were used to evaluate antioxidant activity. Most of the assays were determined spectrometrically.

Findings

O. basilicum L. had the highest of total phenolics content (305.11 mg GAE/g), highest content of anthocyanins (15.427 mg/Kg) and total flavonoids (9.692 QE mg/g). The DPPH, ABTS+, FRAP and H2O2 assay indicated that these plants possessed considerable antioxidant activities.

Originality/value

The results also showed that O. basilicum and L. camara from red colored cultivars possessed high contents of phenolic compounds. FRAP assay showed AOA in the following sequence – Lantana camara>Ocimum basilicum>Piper betle>Grewia asiatica. Since L. camara showed highest antioxidant capacity thus it can be a potential resource for commercial antioxidant.

Details

Nutrition & Food Science, vol. 42 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 5 January 2015

Jyoti Srivastava and Padma S. Vankar

This paper aims to study carotenoids as a natural food colorant from Canna flowers. There is a growing demand for eco-friendly and non-toxic colorants, specifically for…

Abstract

Purpose

This paper aims to study carotenoids as a natural food colorant from Canna flowers. There is a growing demand for eco-friendly and non-toxic colorants, specifically for health-sensitive applications such as colours of food and textiles. Red Canna variety can be grown in normal garden situations and gives ample of flowers yielding good amount of natural colorant for both the purposes.

Design/methodology/approach

In the present work, ultrasound extraction of natural colorant from Canna indica flowers has been studied. The use of ultrasound is found to have a significant improvement in the extraction efficiency of colorants obtained from dry and fresh Canna flowers in different mediums. Ultrasonic cavitational processing has twofold advantages, it is an eco-friendly and cost-effective process.

Findings

The total carotenoid content in dry and fresh flower extract was found to be between 136.56 and 978.89 mg/kg. The assessment of antioxidant activity (AOA) in dry and fresh flower extract was found to be 5.78-78.33 per cent assayed by scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical and identified by electron paramagnetic resonance (EPR) studies.

Research implications/limitations

The use of ultrasonication for the extraction of colorant has been the main feature and a step towards technological advancement in the area of finding newer method of efficient extraction of the colorant.

Practical implications

The ease of extraction due to ultrasound waves has been the highlight.

Originality/value

It is for the first time that the phytochemical data of red Canna flower and has been studied, the total carotenoid content and antioxidant activities of different extracts of Canna were measured. The extraction of natural dye from C. indica flowers using ultrasound has been found to have significant improvement in the extraction efficiency of the colorant obtained from flowers.

Details

Pigment & Resin Technology, vol. 44 no. 1
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 26 October 2012

Jyoti Srivastava and Padma S. Vankar

The purpose of this paper is to carry out phytochemical investigations of different extracts of Eucalyptus globulus bark such as aqueous, methanolic and supercritical carbon…

Abstract

Purpose

The purpose of this paper is to carry out phytochemical investigations of different extracts of Eucalyptus globulus bark such as aqueous, methanolic and supercritical carbon dioxide fluid extract (SCFE) with ethyl acetate as entrainer. Three fractions (Eu 8, 9 and 10) containing steroidal δ‐lactone were isolated from SCF extract and the structure of Eu‐10 was earlier determined on the basis of NMR, HPLC‐MS, X‐Ray crystallography.

Design/methodology/approach

Column chromatography led to the isolation of flavonoids, tannins, steroids, etc. in different solvent systems. Isolated steroidal lactone (Eu‐8,9&10) of Withanolide series were tested for the presence of total phenolic content, total flavonoid content and the results were expressed as gGAE/100 g (TPC), and gQE/100 g (TFC), respectively. The antioxidant capacity was evaluated based on their ability to scavenge free radicals generated from ABTS, DPPH, FRAP and H2O2 by spectrophotometric method.

Findings

The result of the present study showed that different extracts of E. globulus bark and the isolated fractions, exhibited different antioxidant activity. This was due to the fact that they contained different amounts of flavonoid and phenolic compounds as per their ability to solubilize these compounds; the high scavenging property of E. globulus may be attributed to hydroxyl groups existing in the phenolic compounds. All the samples exhibited different extent of antioxidant activity (AOA) and showed higher potency when compared with BHT in scavenging action of DPPH free radical. Comparative data analysis showed SCF extract to be better than methanolic and aqueous extracts, both in terms of yield and AOA, while Eu‐10 was the best amongst purified fractions.

Practical implications

The present research has serious implications on identification of natural antioxidants from E. globulus. Natural antioxidants with better structure‐activity relationship are under investigation. Isolation of withanolide from Eucalyptus bark has opened newer horizon for its use.

Social implications

Collection of Eucalyptus bark from the forest (a forest waste) by women folk can be a source of revenue generation and thus has social implication as well. It is an important agro product.

Originality/value

The steroidal lactone (Eu‐10) showed highest radical scavenging effect even at IC50, thus the isolated lactone proved to be the best potential scavenger of free radicals amongst all crude extracts and the isolated fractions.

Details

Nutrition & Food Science, vol. 42 no. 6
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 3 February 2012

Jyoti Srivastava and Padma S. Vankar

This study is designed to determine the antioxidant profile of the crude aqueous and organic (Ethyl acetate) extract of 11 plants. These plants are mainly distributed in north…

Abstract

Purpose

This study is designed to determine the antioxidant profile of the crude aqueous and organic (Ethyl acetate) extract of 11 plants. These plants are mainly distributed in north eastern (NE) zones of India. Extracts of the aerial and/or underground parts have been applied in traditional medicine for the treatment of different diseases hence they have gained sufficient importance in alternate medicinal therapy.

Design/methodology/approach

The present study was carried out to evaluate the antioxidant activities of extracts NE in vitro systems to gain mechanistic insights.

Findings

Results from antioxidant assays together with authentic antioxidant standards revealed that aqueous extract (AqEx) showed strong superoxide radical scavenging activity, reducing power, and ferrous ion‐chelating ability. The ranges of total phenolic contents was determined and found from 2.0860 to 7.1193 in aqueous extract and 1.7716 to 5.4330 mg (GAEq/100 g) in ethylacetate extract. The results revealed that total flavonoid contents in the selected plant from NE and the range of the extract varied from 0.1769 to 1.6990 mg (QEq/100 g), respectively.

Originality/value

The present study focuses on the antioxidant activity of 11 extracts of Indian origin. The plant extracts are also screened for flavonoid contents and total phenolics.

Details

Nutrition & Food Science, vol. 42 no. 1
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 31 October 2023

Karishma Trivedi and Kailash B.L. Srivastava

This study explores how strategic human resource practices enhance the competitive capability of differentiation and cost-effectiveness by leveraging knowledge resources in Indian…

Abstract

Purpose

This study explores how strategic human resource practices enhance the competitive capability of differentiation and cost-effectiveness by leveraging knowledge resources in Indian IT/software organizations. It examines the mediating effect of knowledge management (KM) processes in the relationship between strategic HR practices, competitive differentiation and cost-effectiveness capabilities.

Design/methodology/approach

An online questionnaire survey collected data from 380 knowledge workers in 25 IT/software and consultancy firms. The authors checked data reliability and validity by conducting exploratory factor analysis in SPSS and confirmatory factor analysis in AMOS. The authors evaluated hypotheses using path analysis in structural equational modeling in AMOS.

Findings

Strategic HR practices significantly and positively affect KM processes and competitive capabilities-differentiation and cost-efficiency. Both strategic HR practices and KM processes have a closer association with differentiation than cost-effectiveness. Knowledge management processes significantly and positively mediate between strategic HR practices and competitive capabilities. The mediation is more substantial in predicting differentiation than cost-effectiveness.

Research limitations/implications

It is a cross-sectional study with a constrained capacity to predict accurate causal inferences; The authors call for future studies with longitudinal design and objective measures. Further studies are required to explore the impact of various strategic HR configurations on KMP to understand how different routes stimulate a particular competitive strategy. This conceptual framework can be validated across different industry types and sizes.

Practical implications

This study provides practical insights to HR and knowledge managers regarding devising HR and KM processes to accomplish the goals of differentiation and cost-effective, competitive strategies. This study highlights that leveraging human capital for effective KM is crucial for gaining a competitive advantage.

Originality/value

The paper adds to the strategic HR and KM literature by exploring the mediating role of KM processes in enabling strategic HR processes to enhance differentiation and cost-effective, competitive strategies. It provides original empirical evidence from knowledge-intensive IT/software consultancies, particularly in India's emerging economy. It indicates the current state of HR practices adopted for optimum utilization of knowledge resources and the importance of differentiation strategy for Indian knowledge-intensive IT/software firms.

Details

Kybernetes, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 6 November 2017

Jeevan Jyoti and Asha Rani

The purpose of this paper is to explore the high performance work system through ability, motivation and opportunity model (Jiang et al., 2013) and its impact on organisational…

3888

Abstract

Purpose

The purpose of this paper is to explore the high performance work system through ability, motivation and opportunity model (Jiang et al., 2013) and its impact on organisational performance. Further, the mediating role of knowledge management between high performance work system and organisational performance has also been evaluated.

Design/methodology/approach

Questionnaire technique has been used to collect the data from managers (n=58) and employees (n=246) working in telecommunication organisations in Jammu and Kashmir (North India). Data collected have been validated using the exploratory factor analysis and confirmatory factor analysis. Hypotheses have been tested through structural equation modelling with the help of AMOS and SmartPLS3 softwares. Further, theoretical, managerial and socio-economic implications have also been discussed.

Findings

The study indicates that high performance work system positively affects organisational performance. Further, knowledge management act as a mediator between high performance work system and organisational performance.

Research limitations/implications

The study has been conducted only in the private telecommunication sector (Airtel, Aircel, Tata Indicom, Idea, Reliance, Vodafone). Further, the study being limited to telecommunication sector can be extended in other sectors also.

Practical implications

In order to create superior work system, management should focus on ability-enhancing initiatives such as extensive job training, computer-based training, etc. on regular basis. Employees should be rewarded extrinsically as well as intrinsically to keep them motivated to achieve higher levels of performance. Further, management should empower the employees through decentralisation of authority, participative decision making, etc. Besides this, management should also instil the knowledge culture in the organisation in order to enhance the knowledge capability of the employees.

Originality/value

This study contributes to the literature by identifying the black box using knowledge management to understand the relationship between high performance work system and organisational performance in the telecommunication sector.

Article
Publication date: 12 August 2021

Sumit Sangwan, Supran Kumar Sharma and Jyoti Sharma

The present study intends to shed light on behaviour of customers towards usage of social media for purchasing decisions. The study proposes an extension to technology acceptance…

Abstract

Purpose

The present study intends to shed light on behaviour of customers towards usage of social media for purchasing decisions. The study proposes an extension to technology acceptance model (TAM) to analyse the significance of monetary benefits and information reliability on customers' intention to use social media.

Design/methodology/approach

The sample was drawn from social media users of north-western region of India (n = 622). The proposed model was tested using exploratory factor analysis and structural equation modelling.

Findings

Results indicate that monetary benefits and perceived ease of use have significant influence on customers' intention to use social media, while information reliability and monetary benefits significantly influence only through perceived usefulness.

Practical implications

The findings are valuable to marketers to acknowledge the potential of social media to reach to masses by providing timely and reliable information. The study also reveals that website/app developers should implement a user-friendly interface and reliable content to influence customers' usage behaviour.

Originality/value

The study is a unique attempt to examine the effect of monetary benefits and information reliability with TAM's key constructs in the context of social media adoption. Studies undertaken aforementioned dimensions are mainly concerned with examining direct contribution of social media and its effect on purchase decisions.

Details

Asia-Pacific Journal of Business Administration, vol. 14 no. 1
Type: Research Article
ISSN: 1757-4323

Keywords

Article
Publication date: 9 April 2018

Jayaraman Rajagopalan and Praveen Kumar Srivastava

The purpose of this paper is to develop a new comprehensive metric to successfully plan and execute IT projects. The development will be based on a study of all the variables that…

Abstract

Purpose

The purpose of this paper is to develop a new comprehensive metric to successfully plan and execute IT projects. The development will be based on a study of all the variables that go into making a successful IT project.

Design/methodology/approach

A questionnaire, containing qualitative and quantitative response questions, to gather data from practicing project managers is designed and used in an IT company. Cronbach’s alpha is used to analyze the data and multiple regression is used to find the equation relating project success to project management success.

Findings

A comprehensive variable called Project Health Index (PHI) has been identified. Using this variable, one can predict whether a project is likely to succeed or not. This comprehensive, composite variable is calculated by using 17 other project-related metrics identified from the responses to the questionnaire.

Research limitations/implications

The PHI has been calculated for the company studied. However, more studies need to be performed before it can be established that the PHI can also be used in other companies and projects. What has been established and validated is that PHI can be used in the studied company and that the methodology to calculate PHI is valid.

Practical implications

The PHI can be used as a predictive variable, i.e. one that can be used to take corrective and preventive actions to make a project successful. The PHI can also be used to allocate resources, prioritize the allocation and improve project management during the course of project execution.

Social implications

By implementing projects efficiently, resource utilisation increases and leads to waste avoidance. Improved sustainability is the end result.

Originality/value

The work is original. The contents and the conclusions drawn, as well as the use of the PHI will enable IT companies to implement projects efficiently, reduce cost and enhance profit.

Details

Journal of Organizational Change Management, vol. 31 no. 2
Type: Research Article
ISSN: 0953-4814

Keywords

Article
Publication date: 9 June 2020

Mahmoud Ahmad Mahmoud, Shuhymee Ahmad and Donny Abdul Latief Poespowidjojo

The purpose of this paper is to extend the prevailing literature on the relationship between personality and individual performance (IP) through the mediation of intrapreneurial…

1484

Abstract

Purpose

The purpose of this paper is to extend the prevailing literature on the relationship between personality and individual performance (IP) through the mediation of intrapreneurial behavior (IB). This study, therefore, integrated the traits theory and the psychological entrepreneurship theory to improve the IP of medium enterprise (ME) managers by examining the mediating role of IB on the relationship between big five personality traits five factor model (FFM) and IP.

Design/methodology/approach

The paper used the survey method of data collection, through self-administered questionnaire. Partial least square structural equation modeling method was used to analyze the result of the sample of 355 production/operations managers.

Findings

The result study shows that three big five personality traits (conscientiousness, disagreeableness and emotional stability) have a direct relationship with IB. However, IB positively mediates the relationship between conscientiousness, disagreeableness and emotional stability on IP of production/operation managers.

Practical implications

The result implies that positive relationship between personality traits (conscientiousness, disagreeableness and emotional stability) and work performance will manifest better, only when the IB is encouraged among managers.

Originality/value

To the best knowledge of the authors, this paper is the first to examine the mediating effect of individual IB on FFM – IP relationship. Studies on IB were also limited especially in developing countries, Africa and specifically Nigeria. As such, individual IB requires the attention of researchers and managers in MEs against the assumption that entrepreneurial orientation is a firm-level activity only.

Details

Management Research Review, vol. 43 no. 12
Type: Research Article
ISSN: 2040-8269

Keywords

Article
Publication date: 2 November 2018

Namrata Chatterjee, Niladri Das and Nishit Kumar Srivastava

The present study aims to investigate the influence of key factors on the success of women micro-entrepreneurs in select states of India.

1517

Abstract

Purpose

The present study aims to investigate the influence of key factors on the success of women micro-entrepreneurs in select states of India.

Design/methodology/approach

An empirical study is carried out to understand the influence of the psychological, socio-cultural, skill and resource-related factors on the success of women entrepreneurs. To achieve the set goal, a comprehensive questionnaire is developed for collecting data and is analyzed using the t-test, the chi-square test and structural equation modeling.

Findings

The proposed model is validated using structural equation modeling, and the fitness values indicate that the model is fit to explain the entrepreneurial success of women entrepreneurs in India.

Practical implications

The result advocates that the participation of women entrepreneurs may be increased to not only improve national growth but also empower women in India.

Originality/value

In the context of the women micro-entrepreneurs, no such study covering such a vast area of India has been carried out.

Details

Journal of Entrepreneurship in Emerging Economies, vol. 11 no. 1
Type: Research Article
ISSN: 2053-4604

Keywords

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