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Article

Pranav Chauhan, Arun K. Das, P.K. Nanda, Vishal Kumbhar and J.P. Yadav

Black cumin (Nigella sativa L.) is well known for its strong, hot, peppery taste and has many nutritional, pharmaceutical and traditional therapeutic uses. The aim of this…

Abstract

Purpose

Black cumin (Nigella sativa L.) is well known for its strong, hot, peppery taste and has many nutritional, pharmaceutical and traditional therapeutic uses. The aim of this study was to investigate the antioxidant effect of different solvent extracts of black cumin seed to retard lipid and protein oxidation in raw ground pork meat during refrigerated storage (4 ± 1°C) for nine days.

Design/methodology/approach

Black cumin extracts (BCEs) were prepared using different solvents, namely, ethanol, water, ethanol:water (60:40) and methanol:hot water (60:40). Extracts were analysed for total phenolic content (TPC), 1,1 diphenyl-2-picrylhydrazil (DPPH) radical scavenging activity and reducing power. Based on the results, water extract (WE) and ethanol–water extract (EHWE) of black cumin were selected and incorporated at 1.5 per cent into freshly minced pork meat and compared with a synthetic antioxidant, butylated hydroxytoluene (BHT; 100 ppm), in retarding lipid and protein oxidation. Treated and control samples were aerobically packed in low-density polyethylene bags for analysis of various parameters (pH, colour and odour score, peroxide, lipid and protein oxidation) during nine-day refrigerated storage study.

Findings

Results showed that BCEs had a good amount of TPC (4.4-7.4 mg gallic acid equivalents/g) and also DPPH scavenging activities (33.96-44.23 per cent), with WE and EHWE extracts showing highest reducing power and promising antioxidant capacity. Hence, BCEs (WE and EHWE) incorporated at 1.5 per cent into freshly minced pork meat was tested, compared to BHT (100 ppm) and control samples, in retarding lipid and protein oxidation during storage. In BCE-treated samples, thiobarbituric acid reacting substances, free fatty acids, peroxide, formation of protein carbonyls and off-odour or rancid odour development were lower than control and values were comparable with BHT. Incorporation of BCE did not negatively affect the colour of ground pork.

Originality/value

BCEs (WE and EHWE) at 1.5 per cent inhibited protein and lipid oxidation and it could be exploited commercially as an effective alternative in retarding oxidative deterioration of meat products.

Details

Nutrition & Food Science, vol. 48 no. 1
Type: Research Article
ISSN: 0034-6659

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Article

Ramaa Arun Kumar and Mahua Paul

This study aims to estimate total factor productivity (TFP) growth for the post-2008 period for selected industries in the manufacturing sector at NIC 3-digit. Total…

Abstract

Purpose

This study aims to estimate total factor productivity (TFP) growth for the post-2008 period for selected industries in the manufacturing sector at NIC 3-digit. Total factor productivity growth (TFPG) estimates are based on the theoretical framework provided by studies such Hall (1988), Abraham et al. (2009) and Crepon et al. (2005) that incorporate market imperfection in labour and product market, thereby modifying the traditional TFP estimation as Solow Residual.

Design/methodology/approach

Based on the theoretical model that incorporates market imperfections in labour as well as product market in modifying the TFP estimates using the Levinsohn–Petrin framework of empirical estimation, the authors have calculated industry wise TFPG for 62 industries at NIC 3-digit level.

Findings

The study finds three distinct trends: first, there are considerable industrial disparities in productivity growth in terms of TFP. The estimates have been found to be higher than the conventional Solow Residual for most industries, indicating the role played by market imperfections in affecting the conventional measure of productivity growth. Second, estimates of bargaining power are found to be lower than those compared to the earlier estimates in Maiti (2013) for the Indian organised manufacturing case for 1998-2005. This observation is commensurate with the observation in recent years of a falling share in labour wage in total output in organised manufacturing sector. Finally, the study also found a statistically significant contribution of greater mechanisation on TFPG while an adverse effect of the rising dependence of organised manufacturing on contractual labour.

Originality/value

The role of market imperfections in measuring TFPG has been undertaken, and it has been found to be an important factor, as the estimated measures vary from the conventional measures of TFPG. Moreover, the study has considered a very recent period from 2008-2015 in estimating TFPG, as well as analysing the factors behind the trends in TFPG at industrial level.

Details

Indian Growth and Development Review, vol. 13 no. 1
Type: Research Article
ISSN: 1753-8254

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Article

Yogesh P. Gadekar, B.D. Sharma, Ajay Kr. Shinde, Arun Kr. Das and S.K. Mendiratta

This paper aims to evaluate the effects of inulin (3 per cent), chitosan (1 per cent) and carrageenan (0.5 per cent) addition on the physico-chemical, sensory and textural…

Abstract

Purpose

This paper aims to evaluate the effects of inulin (3 per cent), chitosan (1 per cent) and carrageenan (0.5 per cent) addition on the physico-chemical, sensory and textural attributes of restructured goat meat products. Health conscious consumers are much more interested in product with added health benefit. Keeping this in mind, this study was undertaken to find out effective ingredient for low fat restructured goat meat product.

Design/methodology/approach

Formulation for restructured goat meat blocks was optimized and four different formulation containing different ingredients, namely, control, inulin (3 per cent), chitosan (1 per cent) and carrageenan (0.5 per cent), were used to find out best ingredient for healthier goat meat product and various physicochemical and sensory properties of the product were evaluated.

Findings

Results showed that addition of carrageenan improved (p < 0.01) the product yield (86.0 per cent) significantly. The proximate composition, expressible water and water activity were similar. The moisture retention percentage was significantly (p < 0.01) reduced (86.0 per cent) due to addition of inulin. Carrageenan significantly (p < 0.05) increased the lightness (42.4) and yellowness (10) values. Significantly (p < 0.05) lower shear force values were observed in inulin (0.5) and chitosan (0.4) containing samples than control (0.7 kg/1.5 cm2). Hardness values were significantly (p < 0.05) lower in restructured product containing chitosan (56.1 N/cm2) and carrageenan (59.4 N/cm2). Similarly, springiness values were significantly (p < 0.05) lower (0.7 vs 0.8 cm) in carrageenan containing product. Inulin, chitosan and carrageenan did not significantly influence the sensory attributes of restructured goat meat product. It is concluded that inulin, chitosan and carrageenan could be used to improve technological and functional attributes of the healthier restructured goat meat product.

Research limitations/implications

Future research may benefit from efforts to modify shelf life of the product by modifying packaging condition.

Originality/value

The healthier meat-based restructured goat meat product has been developed, and the effect on its quality characteristics have been extensively examined, limited research has focused on this aspect.

Details

Nutrition & Food Science, vol. 47 no. 5
Type: Research Article
ISSN: 0034-6659

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Article

Premalatha J. and Sheela D.

This paper aims to present the design of a compact vertically polarized four-element UWB antenna suitable for MIMO communications.

Abstract

Purpose

This paper aims to present the design of a compact vertically polarized four-element UWB antenna suitable for MIMO communications.

Design/methodology/approach

The unit cell antenna is constructed using a square ring radiator excited through a stepped impedance feed. The proposed antenna covers the Ultra-wideband (UWB) spectrum ranging from 2.2 to 12.3 GHz. The isolation between the unit cell antennas in the array is enhanced using a simple microstrip line resonator. The decoupling element is connected to the ground through a via.

Findings

The proposed scheme offers at least 16 dB improvement in the port-to-port coupling. Furthermore, the four-element antenna array is constructed using a specific interlocking scheme. The proposed antenna array’s Multiple Input Multiple Output (MIMO) performance metrics are analyzed.

Originality/value

By suitably selecting the excitation port, directional radiation patterns can be realized. The combined radiation pattern covers 360 degrees. A prototype antenna array is fabricated, and the simulation results are verified using real-time experiments. The proposed antenna is a suitable candidate for shark fin housing in automotive communications.

Details

Circuit World, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0305-6120

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Article

Vishweshwara P.S., Harsha Kumar M.K., N. Gnanasekaran and Arun M.

Many a times, the information about the boundary heat flux is obtained only through inverse approach by locating the thermocouple or temperature sensor in accessible…

Abstract

Purpose

Many a times, the information about the boundary heat flux is obtained only through inverse approach by locating the thermocouple or temperature sensor in accessible boundary. Most of the work reported in literature for the estimation of unknown parameters is based on heat conduction model. Inverse approach using conjugate heat transfer is found inadequate in literature. Therefore, the purpose of the paper is to develop a 3D conjugate heat transfer model without model reduction for the estimation of heat flux and heat transfer coefficient from the measured temperatures.

Design/methodology/approach

A 3 D conjugate fin heat transfer model is solved using commercial software for the known boundary conditions. Navier–Stokes equation is solved to obtain the necessary temperature distribution of the fin. Later, the complete model is replaced with neural network to expedite the computations of the forward problem. For the inverse approach, genetic algorithm (GA) and particle swarm optimization (PSO) are applied to estimate the unknown parameters. Eventually, a hybrid algorithm is proposed by combining PSO with Broyden–Fletcher–Goldfarb–Shanno (BFGS) method that outperforms GA and PSO.

Findings

The authors demonstrate that the evolutionary algorithms can be used to obtain accurate results from simulated measurements. Efficacy of the hybrid algorithm is established using real time measurements. The hybrid algorithm (PSO-BFGS) is more efficient in the estimation of unknown parameters for experimentally measured temperature data compared to GA and PSO algorithms.

Originality/value

Surrogate model using ANN based on computational fluid dynamics simulations and in-house steady state fin experiments to estimate the heat flux and heat transfer coefficient separately using GA, PSO and PSO-BFGS.

Details

Engineering Computations, vol. 36 no. 9
Type: Research Article
ISSN: 0264-4401

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Article

Arun Kumar Verma, Vincentraju Rajkumar, M. Suman Kumar and Shiv Kumar Jayant

This paper aims to explore the application of drumstick (Moringa oleifera) flower (DF) as a functional antioxidative ingredient in goat meat product.

Abstract

Purpose

This paper aims to explore the application of drumstick (Moringa oleifera) flower (DF) as a functional antioxidative ingredient in goat meat product.

Design/methodology/approach

Dried DF was included in the product formulation at 1% (Treatment I) and 2% (Treatment II) levels. The physicochemical, colour, textural and sensory quality as well as storage stability of nuggets with DF were determined against control.

Findings

The dried DF was found to be rich source of protein and dietary fibre, possessing good antioxidant potential. Chromatographic analysis of DF extract showed presence of 14 active principles known to have antioxidative properties. Inclusion of dried DF decreased pH values of emulsion (p = 0.005) as well as nuggets (p < 0.001) and increased (p < 0.001) the ash, dietary fibre and phenolic contents. The added DF affected the product’s lightness (p = 0.017), yellowness (p < 0.001, hardness (p < 0.001), adhesiveness (p = 0.032), cohesiveness (p = 0.006), gumminess and chewiness (p < 0.001). Sensory characteristics of control and product with DF were statistically similar except low (p = 0.002) flavour score for Treatment II. DF inclusion lowered (p < 0.001) thiobarbituric acid reactive substances number and total plate count.

Research limitations/implications

DF can be used as a source of antioxidants and dietary fibre in goat meat nuggets to enhance their health value, functionality and storage stability.

Originality/value

Foods including goat meat nuggets enriched with goodness of functional ingredients like dietary fibre and natural antioxidants are gaining consumer’s preference globally. Inclusion of drumstick flower in goat meat nuggets significantly increases the dietary fibre and antioxidants making such products healthier and more stable. Consumption of goat meat nuggets added with drumstick flower is expected to improve consumer’s well-being as well.

Details

Nutrition & Food Science , vol. 50 no. 1
Type: Research Article
ISSN: 0034-6659

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Article

Mrudula Manoj, Anjitha Ram Das, Arun Chandran and Santanu Mandal

Recent studies have classified ecotourism behaviour into specific components like site-specific ecological, pro-environmental and environmental learning behaviour…

Abstract

Purpose

Recent studies have classified ecotourism behaviour into specific components like site-specific ecological, pro-environmental and environmental learning behaviour. However, the role of materialism in generating these types of behaviour is not clearly understood. Materialism might also affect tourists' environmental engagement. Hence, this study embarks on exploring these research gaps.

Design/methodology/approach

All the constructs were operationalized as first-order factors based on extant scales of measurement. After suitable pretesting, the study was able to collect 122 valid responses. The responses were analysed using partial least squares (PLS).

Findings

Results suggest that environmental engagement and environmental learning behaviour have prominent roles as enablers. Furthermore, the importance of materialism is not statistically significant and requires further investigation.

Research limitations/implications

While the study showed that environmental engagement is a crucial precursor for the development of different types of ecotourism behaviour, it also has limitations. First, the study tested the validity of the proposed associations based on the perceptual responses of 122 tourists who are interested in participating in ecotourism. However, this may lack generalizability. Future research can take a common set of tourists or a specific destination and execute a longitudinal analysis to better understand the way ecotourism behaviour has evolved over time at a destination. This would in turn help the local people and tour planners to develop tourism packages and events.

Practical implications

As tourists are interested in environmental learning, they are eventually expected to take care of the destination environment in terms of protecting it in every form. This may include reporting of any environment damaging activity, for example, activities that can enhance environmental pollution, etc.

Social implications

Materialism hinders the environmental conservation spree of tourists, when they indulge more in shopping and leisure trips. Hence, for destination planners it is very important to hold complementary events in addition to the main event to highlight the dire need of involving in ecotourism activities.

Originality/value

The study is of significant contribution for researchers and practitioners as it develops the antecedents and consequences of environmental learning behaviour. Furthermore, this study has implications for managers working for sustainability of tourism destinations.

Details

Journal of Hospitality and Tourism Insights, vol. 3 no. 4
Type: Research Article
ISSN: 2514-9792

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Article

Arun Jyoti Nath and Ashesh Kumar Das

The present study seeks to evaluate the role of village bamboo management in the rural landscape of North East India in global climate change mitigation.

Abstract

Purpose

The present study seeks to evaluate the role of village bamboo management in the rural landscape of North East India in global climate change mitigation.

Design/methodology/approach

A set of 100 home gardens and 40 bamboo groves were selected from Irongmara and Dargakona village, in Cachar district, Assam, North East India through random sampling. Sampling was done mostly for smallholders. Culm growth, carbon storage, carbon sequestration and carbon in litter floor mass and soil of bamboo growing areas in homegarden was explored from 2003‐2007.

Findings

Culm growth extension revealed the brief periodicity of culm growth in a single growth period. Of the total carbon storage soil contributed 84.6 per cent of the total (50.1 Mg ha−1) followed by carbon in above ground vegetation 15 per cent (9 Mg ha−1) and carbon in litter floor mass 0.4 per cent (0.2 Mg ha−1).

Practical implications

Bamboo plantation development and its management in home gardens has social, ecological and economical benefits for the rural life in North East India and its promotion can become an effective choice for climate change mitigation strategy.

Originality/value

Bamboo forms an important component in the traditional home garden system of North East India where the practice of bamboo cultivation and management provides an important sink for CO2. Village bamboos play an important role in local economics, societies and environments and, considering its potential to mitigate global climate change, the authors recommend the promotion of bamboo in agroforestry expanding practices and rehabilitation of degraded lands. Management of village bamboos in rural landscape is highlighted in context to environmental sustainability and as a sink measure under the Clean Development Mechanism (CDM) of Kyoto Protocol.

Details

International Journal of Climate Change Strategies and Management, vol. 4 no. 2
Type: Research Article
ISSN: 1756-8692

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Article

Tiken Das

The purpose of this paper is to evaluate the impact of credit access on income and multidimensional poverty by providing an econometric framework.

Abstract

Purpose

The purpose of this paper is to evaluate the impact of credit access on income and multidimensional poverty by providing an econometric framework.

Design/methodology/approach

The study is conducted in Assam, India and uses a quasi-experiment design to gather primary data. Econometric tools like Heckit procedure, Tobit selection equation and probit model are used for empirical purpose.

Findings

The paper finds that the level of individual welfare is influenced by equivalent factors. In addition, the study observes a larger incidence of poverty among treatment households of semiformal and informal borrowers. The study argues that formal sources are more effective in reducing the number of poor households by lifting those who are closest to the poverty line.

Research limitations/implications

The study indicates a vicious circle of income and multidimensional poverty among semiformal and informal borrowers. By tradition, as rural Assam gets a dominant role of traditional community-based financial institutions, we should develop the banking structure by involving these institutions. The study excludes other probable explanatory variables while evaluating the impact of credit access on income and multidimensional poverty, and this limitation is left to future research.

Originality/value

This is probably the first empirical paper in Assam showing the impact of credit access on multidimensional poverty by adjusting for endogeneity and selection bias.

Details

International Journal of Social Economics, vol. 46 no. 2
Type: Research Article
ISSN: 0306-8293

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Case study

K. V. Sandhyavani, Arun Kumar, G. Taviti Naidu and Goutam Dutta

This is a case of a crisis project management which showcases the unpredictable nature of the project and the role of management in handling the crisis. It is the case of…

Abstract

This is a case of a crisis project management which showcases the unpredictable nature of the project and the role of management in handling the crisis. It is the case of a very severe cyclonic storm hitting the city of Visakhapatnam plant during October, 2014. The whole city was devastated and so was the situation in the Steel plant as it was under zero power conditions for around 10 days. This case gives need for managing an integrated steel plant in case of very severe cyclonic storm and documents the sequence of events and managing unforeseen uncertainty using NTCP concepts.

Details

Indian Institute of Management Ahmedabad, vol. no.
Type: Case Study
ISSN: 2633-3260
Published by: Indian Institute of Management Ahmedabad

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