Search results

1 – 5 of 5
Article
Publication date: 28 April 2020

Florence Malongane, Lyndy Joy McGaw and Fhatuwani Nixwell Mudau

The present study was carried out to determine (1) essential minerals, total polyphenols, total flavonoids, moisture and ash of four selected South African herbal teas and (2) the…

Abstract

Purpose

The present study was carried out to determine (1) essential minerals, total polyphenols, total flavonoids, moisture and ash of four selected South African herbal teas and (2) the effect of blending bush tea with other known commercial herbal teas.

Design/methodology/approach

The method used to determine moisture and ash contents followed that of the Association of Official Analytical Chemists (AOAC). Nine minerals were analyzed using inductively coupled plasma optical emission spectrometry (ICP-OES). The total phenolic and flavonoid contents were determined by Folin–Ciocalteu assay and aluminum chloride colorimetric assay, respectively.

Findings

The results of the study demonstrated that bush tea had a high ash content of 8.01% and special tea (9.23%), while honeybush (1.96%) and rooibos tea (2.17%) exhibited a low ash percentage. The mineral content was higher in bush tea and special tea than in rooibos tea and honeybush tea except for sodium, which was higher in rooibos tea. The blending of bush tea with special tea improved its potassium content from 22,937.00 mg/kg to 23,379.20 mg/kg. Blending bush tea with rooibos tea at a ratio of 25:75 increased the flavonoid content to 12.21 µg/mL.

Research limitations/implications

The results of the nutrients composition cannot be generalized as it is influenced by other factors such as soil type and seasons.

Social implications

Increasing the commercialization of indigenous teas.

Originality/value

The results of the study suggest that bush tea and special tea are nutritionally comparable with South African commercial herbal teas. Thus, the consideration for commercialization of these teas is crucial.

Details

British Food Journal, vol. 122 no. 9
Type: Research Article
ISSN: 0007-070X

Keywords

Open Access
Article
Publication date: 3 June 2019

Lutendo Patricia Mathivha, Vuyisile Samuel Thibane and Fhatuwani Nixwell Mudau

The purpose of this paper is to investigate the health and medicinal importance of bush tea (Athrixia phylicoides DC) and special tea (Monsonia burkeana Planch. ex Harv), two of…

1983

Abstract

Purpose

The purpose of this paper is to investigate the health and medicinal importance of bush tea (Athrixia phylicoides DC) and special tea (Monsonia burkeana Planch. ex Harv), two of Southern African indigenous herbal teas.

Design/methodology/approach

The two herbal teas, A. phylicoides and M. burkeana were extracted individually and in combined ratios for analysis. The phenolic content was determined and the different phenolic compounds were identified using thin-layer chromatography (TLC) and high-performance liquid chromatography (HPLC). The anti-diabetic activity of the teas was determined by evaluating the inhibition of both α-amylase and α-glucosidase in vitro. The anti-proliferative activity was measured on human cervical cancer (HeLa) cell line using the MTT (3-(4,5-dimethylthiazol-2-yl)2,5-diphenyltetrazolium) assay.

Findings

Gallic acid, chlorogenic acid and quercetin were identified to be present in significant quantities by TLC. The HPLC quantified the presence of catechin (1.567 mg/g) and chlorogenic acid (1.862 mg/g) in special tea while chlorogenic acid (1.288 mg/g) was present in bush tea. Bush tea and special tea expressed significant levels of phenolic content and high antioxidant activities. Special tea (S100) expressed high inhibition of α-amylase, α-glucosidase and HeLa cell line proliferation when compared to bush tea (B100).

Originality/value

Both bush tea and special tea could provide an alternative for treatment and management of both diabetes and cervical cancer. However, future studies are needed to investigate their synergistic effect with a wide range of other commercial herbal teas.

Details

British Food Journal, vol. 121 no. 4
Type: Research Article
ISSN: 0007-070X

Keywords

Case study
Publication date: 1 December 2021

Richard Thomson, Katherine Hofmeyr and Amanda Bowen

At midnight on Thursday, 26 March 2020, the South African government ordered a three-week lockdown in response to the COVID-19 pandemic and subsequently extended this lockdown for…

Abstract

Case overview

At midnight on Thursday, 26 March 2020, the South African government ordered a three-week lockdown in response to the COVID-19 pandemic and subsequently extended this lockdown for a further two weeks until the end of April 2020. Among other measures, businesses not classed as “essential” had to cease operation. This meant that Jonathan Robinson, founder of the Bean There Coffee Company had to close his trendy Cape Town and Milpark coffee shops, as well as the company’s hospitality and corporate business. At the same time, Bean There’s costs increased by 25%, as the rand: dollar exchange rate worsened substantially. A glimmer of hope was that the company was able to continue roasting coffee and supplying its retail clients. Unlike most captains of industry, Robinson was not driven by the bottom line and clamouring shareholders. His corporate strategy was driven by a single, simple purpose: to achieve ethical sustainability aspirations while still running a profitable business. The question for him now, however, was how to ensure that his company could survive in the short term, so that it could achieve these goals in the longer term, and whether he could take this opportunity to think about whether his business was best positioned to achieve these goals when things returned to normal.

Expected learning outcomes

The learning outcomes are as follows: conduct a thorough analysis of a specific company and its industry, including its markets, competitors, and other aspects of the internal and external business environment, using a range of tools, including a Business Model Canvas (BMC), SWOT analysis and PESTLE analysis; analyse and explain the market outlook of a company; identify and analyse a company’s competitors; discuss and explain a detailed implementation plan showing the way forward for a company, considering its current challenges, including integrating a range of conceptual and analytical fields of knowledge to assess a management dilemma, and arrive at a creative and innovative management solution; and be able to present information and defend substantial insights and solutions to a management dilemma in oral and written modes, appropriate in standard for both the academic and business communities to analyse and appreciate.

Complexity academic level

Postgraduate Diploma in Management, MBA, Masters in Management, Executive Education.

Supplementary materials

Teaching notes are available for educators only.

Subject code

CSS 11: Strategy.

Details

Emerald Emerging Markets Case Studies, vol. 11 no. 4
Type: Case Study
ISSN: 2045-0621

Keywords

Article
Publication date: 1 January 2004

Zenobia Ismail and Tashil Fakir

The commercial value of Africa's indigenous knowledge may potentially jumpstart development if the returns are shared with its African owners. The internationalisation of an…

3857

Abstract

The commercial value of Africa's indigenous knowledge may potentially jumpstart development if the returns are shared with its African owners. The internationalisation of an intellectual property regime appears to be facilitating the appropriation of indigenous knowledge and products from developing countries by multinational corporations. Indigenous knowledge is removed from the communal domain and converted to foreign‐owned private property, effectively depriving developing countries of the commercialisation value of their heritage via exports and value‐added processing. The lopsided benefits of IPR protection are exemplified in the case of the US‐owned trademark on South Africa's indigenous Rooibos tea, which is becoming increasingly popular worldwide. Trademark protection may have devolved perversely into trade protectionism, thus undermining the Millennium Development Goals of market access and sustainable development. A revision of IPR's and TRIPS to incorporate recognition and protection of indigenous knowledge is necessary to foster development.

Details

International Journal of Social Economics, vol. 31 no. 1/2
Type: Research Article
ISSN: 0306-8293

Keywords

Article
Publication date: 25 May 2022

Deepti Jamwal, Priyanka Saini, Pushpa C. Tomar and Arpita Ghosh

The aim of this study is to provide a review of the research studies that took place in the previous years regarding Mangiferin and its potential use in the treatment of various…

87

Abstract

Purpose

The aim of this study is to provide a review of the research studies that took place in the previous years regarding Mangiferin and its potential use in the treatment of various disorders such as diabetes, cardiovascular diseases, cancer and human immunodeficiency virus.

Design/methodology/Approach

Mangiferin can be easily extracted from the plant at a very low cost to treat some common as well as deadly diseases, which will be a miracle in herbal treatment. In support of this, the recent related articles were considered to understand the bioactive compound “Mangiferin” to treat lifestyle diseases. Various review articles and research papers were collected from international and national journals, and internet sources were also being used to compile the current manuscript.

Findings

Mangiferin has been shown to have the potential to mitigate many life style diseases such as diabetes, obesity, hypertension, fatty liver, atherosclerosis, dyslipidemia and diabetes-related end-organ complications such as retinopathy, neuropathy and nephropathy.

Originality/value

In this comprehensive review, this study evaluates Mangiferin and its lifestyle disease-modifying properties for nutraceuticals purposes.

Details

Nutrition & Food Science , vol. 53 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

1 – 5 of 5