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Article
Publication date: 18 October 2018

Hashimah Elias, Rosna Mat Taha, Nor Azlina Hasbullah, Rashidi Othman, Noraini Mahmad, Azani Saleh and Sakinah Abdullah

This paper aims to study the effect of different organic solvents on the extraction of pigments present in callus cultures of E. cinerascens.

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Abstract

Purpose

This paper aims to study the effect of different organic solvents on the extraction of pigments present in callus cultures of E. cinerascens.

Design/methodology/approach

Attempts have been made to extract pigments from callus cultures through tissue culture system as an alternative replacement for conventional plant cultivation as tissue culture provides unlimited supplies of plant samples. Callus of E. cinerascens was induced from stem explant cultured in Murashige and Skoog medium supplemented with combination of 0.5 mg/L 6-benzylaminopurine and 0.5 mg/L α-naphthaleneacetic acid maintained under photoperiod of 16 h light and 8 h dark. Fresh samples of the callus were harvested and dissolved in various types and concentrations of solvents such as 100 per cent acetone, 80 per cent acetone, 95 per cent ethanol, 100 per cent methanol and 90 per cent methanol. Each of the mixtures was directly centrifuged to get clear supernatant containing pigments of interest. The pigments were detected and subsequently quantified via two simple techniques, ultraviolet-visible (UV-Vis) spectrophotometer and thin layer chromatography (TLC).

Findings

UV-Vis spectrophotometer detected two families of pigments present in the callus cultures, namely, carotenoids (carotene and xanthophyll) and tetrapyrroles (chlorophyll a and b). Pigment contents in various solvent extractions were estimated using spectroscopic quantification equations established. Through TLC, spots were seen on the plates, and Rf values of each spots were assessed to indicate the possible existence of carotenoids and tetrapyrroles.

Originality/value

This preliminary study offers significant finding for further advance research related on natural pigments extracted from E. cinerascens that would provide profits in the future applications, especially in food industry, medicine, agriculture, etc.

Details

Pigment & Resin Technology, vol. 47 no. 6
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 17 August 2018

Noraini Mahmad, R.M. Taha, Rashidi Othman, Sakinah Abdullah, Nordiyanah Anuar, Hashimah Elias and Norlina Rawi

The purpose of this paper is to validate the antimicrobial activity (both antibacterial and antifungal) of in vivo and in vitro ethanolic anthocyanin extracts of Clitoria ternatea

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Abstract

Purpose

The purpose of this paper is to validate the antimicrobial activity (both antibacterial and antifungal) of in vivo and in vitro ethanolic anthocyanin extracts of Clitoria ternatea L. (vivid blue flower butterfly-pea) and Dioscorea alata L. (purple yam) against selected bacteria (Bacillus subtilis, Staphylococcus aureus and Escherichia coli) and fungi (Fusarium sp., Aspergillus niger and Trichoderma sp.).

Design/methodology/approach

The freeze-dried samples (0.2 g) from in vivo vivid blue flowers of C. ternatea L. were extracted using 10 mL ethanol (produced ethanolic red extraction) and 10 mL distilled water (produced aqueous blue extraction) separately. Two-month-old in vitro callus samples (0.2 g) were only extracted using 10 mL ethanol. The anthocyanin extractions were separated with the addition (several times) of ethyl acetate and distilled water (1:2:3) to remove stilbenoids, chlorophyll, less polar flavonoids and other non-polar compounds. Furthermore, the antimicrobial properties were determined using agar diffusion technique. Three bacteria (B. subtilis, S. aureus and E. coli) and fungi (F. sp., A. niger and T. sp.) were streaked on bacteria agar and dextrose agar, respectively, using “hockey stick”. Then, the sterile paper discs (6 mm diameter) were pipetted with 20 µL of 1,010 CFU/mL chloramphenicol (as control for antibacterial) and carbendazim (as control for antifungal) in vivo and in vitro extracts. The plates were incubated at room temperature for 48 h, and the inhibition zones were measured.

Findings

Based on the results, both in vivo and in vitro ethanolic extracts from vivid blue flowers of C. ternatea L. showed the best antibacterial activity against the same bacteria (B. subtilis), 11 and 10 mm inhibition zones, respectively. However, different antifungal activity was detected in in vitro ethanolic callus extract (12 mm), which was against T. sp., contrary to in vivo ethanolic extract (10 mm), which was against F. sp.; antibacterial activity of D. alata L. was seen against the same bacteria (E. coli) with the highest inhibition zone for in vivo extract (8.8 mm), followed by in vitro extract (7.8 mm).

Research limitations/implications

Anthocyanins are responsible for the water soluble and vacuolar, pink, red, purple and blue pigments present in coloured plant pigments. These pigments (pink, red, purple and blue) are of important agronomic value in many crops and ornamental plants. However, anthocyanins are not stable and are easy to degrade and fade whenever exposed to light.

Social implications

Plant extracts containing bioactive agents with antimicrobial properties have been found to be useful in treating bacterial and fungal infections, as well as showed multiple antibiotic resistance.

Originality/value

Both in vivo and in vitro extracts from vivid blue flower petals (C. ternatea L.) and purple yam (D. alata L.) have important applications as natural antimicrobial (antibacterial and antifungal) agents in the coating industry, instead of natural pharmaceutical products.

Details

Pigment & Resin Technology, vol. 47 no. 6
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 17 January 2022

Ascarya Ascarya, Muhamad Nadratuzzaman Hosen and Siti Rahmawati

Productive waqf is one type of ethical business/investment, which should comply to Islamic law, with so many models to choose from. The purpose of this study is to determine…

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Abstract

Purpose

Productive waqf is one type of ethical business/investment, which should comply to Islamic law, with so many models to choose from. The purpose of this study is to determine factors of simple productive waqf, propose several simple productive waqf models and select the best simple productive waqf models appropriate to be adopted by waqf institution in Indonesia.

Design/methodology/approach

This study applies the analytic network process, including field survey, focused group discussion and in-depth interview, with two groups of respondents, namely, expert and waqf practitioner.

Findings

The results show that the determinants of simple productive waqf in Indonesia are the waqf institution, productive waqf asset to be developed, how to finance the productive waqf, how to manage the productive waqf and the compliance of productive waqf. Proposed productive waqf models include cash-waqf and self-managed model, Islamic bank financing and self-managed model, Sukuk and external partnership model, cash-waqf and external partnership and cash-waqf + co-financing and external partnership. Moreover, the best simple productive waqf model is cash-waqf and self-managed model, followed by cash-waqf and external partnership, where they could achieve the most in all socio-economic variables, well-being compliance and moral/ethics within the theory of unity of knowledge, Tawhid.

Research limitations/implications

The simple productive waqf models proposed are not exhaustive, since there are so many variations of the model. Moreover, the case and respondents are all Indonesian, so that the results are possibly only applicable to Indonesia.

Practical implications

To increase the probability of successful productive waqf development, waqf institutions could apply cash-waqf and self-managed model first, while other models could be applied in staged in line with waqf institution experience.

Social implications

The successful development of productive waqf could increase the social programs provided by waqf institutions to the society.

Originality/value

Productive waqf development is desperately needed due to many unproductive waqf lands in Indonesia, while studies have been limited, and there is no study discussing the productive waqf model appropriate for Indonesia.

Details

International Journal of Ethics and Systems, vol. 38 no. 3
Type: Research Article
ISSN: 2514-9369

Keywords

Available. Content available
Book part
Publication date: 16 June 2021

Abstract

Details

Monetary Policy, Islamic Finance, and Islamic Corporate Governance: An International Overview
Type: Book
ISBN: 978-1-80043-786-9

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Article
Publication date: 6 February 2017

Rosman Mahmood, Ahmad Suffian Mohd Zahari, Najihah Marha Yaacob and Sakinah Mat Zin

The purpose of this paper is to evaluate the importance of innovation for the performance of small firms in the construction sector. Furthermore, this paper also examines the…

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Abstract

Purpose

The purpose of this paper is to evaluate the importance of innovation for the performance of small firms in the construction sector. Furthermore, this paper also examines the influence of several factors related to entrepreneurial capital (entrepreneurial value, business strategy, experience and training) on small firm performance in the sector.

Design/methodology/approach

This study uses primary data of 255 small firms in the construction sector under the category of small contractors (G1). Stratified sampling method was utilized for data collection, which is then analyzed using the descriptive and multiple regression analysis to achieve the objectives of the study.

Findings

The findings showed that the factor of innovation and several factors related to entrepreneurial capital (entrepreneurial value, business strategy and business experience) have a significant positive relationship with the performance of small firms in the construction sector. However, factor of training indicated a significant negative correlation with small firm performance.

Research limitations/implications

Although this study found a significant impact in explaining the factors that affect performance, particularly in the construction sector, it only takes into account only some internal factors (entrepreneurial capital and innovation). Proposed future research should consider a variety of other factors mainly related to external factors, such as economic development, growth potential, industry structure, internal social capital and government policy.

Practical implications

This study provides clear implications related to the theory and contributions to the literature related to research in the construction sector. The study also provides invaluable insightfulness to various stakeholders including policy makers, institutional support and small contractors about the importance of innovation and entrepreneurial capital in determining the performance of small firms in the sector.

Originality/value

The results provide supportive evidence that entrepreneurial values and business strategy are important internal factors in determining the performance of a firm, which is consistent with the theory of resource-based view. Experience and training factors, as indicators of firm performance, are articulated in the theory of human capital. Hence, the findings not only can strengthen both the theories but also make a significant contribution to the literature of the study, particularly in the construction sector.

Details

International Journal of Housing Markets and Analysis, vol. 10 no. 1
Type: Research Article
ISSN: 1753-8270

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Book part
Publication date: 19 November 2018

Nuurshiraathal Firdaws Abd Rani and Asmak Ab Rahman

Purpose – Women are more susceptible to specific health risks such as breast cancer, cervical cancer, and risk during pregnancy and childbirth. These can affect women’s well-being…

Abstract

Purpose – Women are more susceptible to specific health risks such as breast cancer, cervical cancer, and risk during pregnancy and childbirth. These can affect women’s well-being and also need to be managed to avoid financial loss. Takaful operators in Malaysia have been offering special takaful products for women. Women can mitigate exposure to these risks through insurance. This study examines the risks faced by Malaysian women and the coverage they are offered by Islamic insurance.

Methodology/approach – The study used a qualitative methodology involving documentary evidence and interviews with four Islamic insurance agents and four product development officers from four Islamic insurance providers in Malaysia.

Findings – Among the risks faced by women are female-specific illnesses, the cost of expensive treatments, crime-related accidents or loss, social or career risks and privatisation policy. Due to these risks, women are in need of female-specific takaful products to reduce risk and protect themselves.

Originality/value – Specific takaful products for women are crucial to protect them from risks, improving their well-being and increasing their participation in the nation’s economic and social development.

Details

New Developments in Islamic Economics
Type: Book
ISBN: 978-1-78756-283-7

Keywords

Available. Content available
Book part
Publication date: 20 May 2019

Abstract

Details

Research in Corporate and Shari’ah Governance in the Muslim World: Theory and Practice
Type: Book
ISBN: 978-1-78973-007-4

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Book part
Publication date: 9 December 2024

Bernard Lim Jit Heng, Phuah Kit Teng, Siti Intan Nurdiana Wong Abdullah, Ow Mun Waei and Khoong Tai Wai

By market capitalisation, Bitcoin, which debuted in 2009, is the biggest cryptocurrency globally. A decentralised ledger system called blockchain is used in the creation…

Abstract

By market capitalisation, Bitcoin, which debuted in 2009, is the biggest cryptocurrency globally. A decentralised ledger system called blockchain is used in the creation, distribution, trading, and storage of Bitcoin, with the original goal being to address the shortcomings of fiat currency. This chapter highlights potential dangers and legal concerns when Bitcoin interacts with the actual economy and the traditional financial system. Besides, the details also discuss the platform’s design principles and attributes for a non-technical readership. When assessing its transactional potential, some recognise its potential for speculation, while others are doubtful of its admirable intent. The write-up also explores the potential of the adoption of cryptocurrencies in Southeast Asia due to the vast adoption of Bitcoins in countries such as Vietnam and the Philippines following the establishment of cryptocurrency technology and e-commerce. In addition, rankings of the cryptocurrency and legal stance from each country in Southeast Asia were exhibited as the solid foundation of cryptocurrencies existent for transaction purposes. The rise of central bank digital currencies (CBDC) and the future directions of Bitcoins were also highlighted in this write-up to spur the debate on whether cryptocurrency remains a fad of sensation or is legalised as the medium of exchange in an ever-growing digital world of commerce.

Details

Augmenting Retail Reality, Part A: Blockchain, AR, VR, and the Internet of Things
Type: Book
ISBN: 978-1-83608-635-2

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Article
Publication date: 17 February 2025

Syafiuddin Parenrengi, Jamaluddin, St. Aisyah, Ridwan Daud Mahande and Wirawan Setialaksana

This study aims to explore how autonomy, competence and relatedness impact work-based learning (WBL) motivation and engagement, contributing to enhanced employability skills…

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Abstract

Purpose

This study aims to explore how autonomy, competence and relatedness impact work-based learning (WBL) motivation and engagement, contributing to enhanced employability skills. Additionally, it examines whether there are significant differences in these effects between students from STEM and social humanities.

Design/methodology/approach

This study employed a correlational design with 284 undergraduate students, collecting cross-sectional data through validated surveys on autonomy, competence, relatedness, WBL and employability skills. The analysis utilized structural equation modeling partial least squares (SEM-PLS) and partial least squares-multi-group analysis (PLS-MGA) to explore WBL’s mediating role in the relationship between SDT components and employability skills, with comparisons across different academic faculties.

Findings

The results show that autonomy, competence and relatedness significantly enhance students’ employability skills through WBL. WBL serves as a mediator that strengthens student motivation and engagement, with notable differences in the effects between STEM and social humanities students.

Practical implications

Higher education institutions should integrate SDT principles autonomy, competence and relatedness into WBL programs to enhance employability skills. Moreover, these programs should be tailored to accommodate the distinct needs of students from various academic backgrounds, such as STEM and social humanities.

Originality/value

This study establishes a novel connection between self-determination theory (SDT) and the development of employability skills through WBL. It provides new insights into the mediating role of WBL in the relationship between SDT components and employability, highlighting the differential impacts across academic disciplines, particularly between STEM and social-humanities students.

Details

Higher Education, Skills and Work-Based Learning, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2042-3896

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Article
Publication date: 30 January 2025

Khairul Akmaliah Adham, Nadiah Mahmad Nasir, Nur Sa’adah Muhamad, Saida Farhanah Sarkam and Raudha Md Ramli

This study aims to investigate the attributes of halal tourism with family members by exploring the experiences of Muslims who had travelled with their families to the local…

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Abstract

Purpose

This study aims to investigate the attributes of halal tourism with family members by exploring the experiences of Muslims who had travelled with their families to the local islands of the Maldives. This country was chosen as the context of the study as it is a destination with a fully Muslim population, which served as a normative context for studying halal tourism.

Design/methodology/approach

A basic qualitative design was adopted as the research methodology, with the data collected through in-depth interviews with the selected Muslim families.

Findings

Nine emergent themes unique to the context of halal tourism with family members extend the existing discussion on family tourism and halal tourism. Overall, halal family tourism experience is laden with Islamic family values, characterised by the dimensions of group organisation, safety, practicality, risk management as well as mutual respect and benefit between travellers and providers, and among family members. This experience leads to increased family bonding and the internalisation of Islamic values. Hence, this study highlights halal tourism with family members as a form of dignified tourism.

Originality/value

Travel with the family deserves greater academic attention due to the large market size and the distinctive nature of travel undertaken by groups of individuals bonded through familial relationships. To the best of the authors’ knowledge, this study is among the first to explore the attributes of halal tourism with family members, and the normative Islamic context of the local islands of the Maldives assisted in elucidating the emergent themes and values of this form of halal tourism with family members. Halal family tourism, as a nexus of family tourism and halal tourism, offers a huge potential of future research avenue.

Details

Journal of Islamic Marketing, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1759-0833

Keywords

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