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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

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

Keywords

Article
Publication date: 1 February 2013

B.A. Akinwande, O.A. Abiodun and I.A. Adeyemi

The aim of the study is to compare the effect of steaming method and time on the physico‐chemical properties of underutilized Dioscorea dumetorum with three more commonly consumed…

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Abstract

Purpose

The aim of the study is to compare the effect of steaming method and time on the physico‐chemical properties of underutilized Dioscorea dumetorum with three more commonly consumed Dioscorea rotundata, Dioscorea cayenensis and Dioscorea alata.

Design/methodology/approach

Raw and pre‐gelatinized flour were produced from the yam species. Pre‐gelatinization was done by steaming diced cubes in autoclave at 68,950 Nm‐2 for 5 min and in Barlett steamer at 98±2°C for 10, 20 and 30 min. Flour samples were analyzed for amylose content, swelling index, consistency, solubility, water absorption capacity, and iodine affinity for starch.

Findings

The physico‐chemical properties of the flours were affected by both species and steaming time. Pre‐gelatinization of the tuber reduced amylose content in all the yam species, which reduced further with increase in steaming time. Except for amylose content and iodine affinity for starch, D. dumetorum compared with D. rotundata and D. cayenensis in the parameters that were measured. Samples autoclaved for 5 min had value similar to those steamed in Barlett steamer for 10 and 20 min for all the parameters that were measured, except consistency.

Practical implications

It is very important to encourage the cultivation and utilization of D. dumetorum because of the high yield and nutritional composition to enhance the nutritional and financial well‐being of the populace.

Originality/value

Pre‐gelatinization is important as pre‐treatment for yam tubers. Underutilized D. dumetorum could be useful in ingredient formulation for product development, especially as a thickening agent.

Details

Nutrition & Food Science, vol. 43 no. 1
Type: Research Article
ISSN: 0034-6659

Keywords

Open Access
Article
Publication date: 8 September 2023

Arianna Maever Loreche, Veincent Christian F. Pepito and Manuel M. Dayrit

This review aimed to identify and map published studies on self-care practices to manage common acute health conditions in the Philippines.

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Abstract

Purpose

This review aimed to identify and map published studies on self-care practices to manage common acute health conditions in the Philippines.

Design/methodology/approach

The authors conducted a scoping review in PubMed, Scopus, Cumulative Index of Nursing and Allied Health Literature (CINAHL), ProQuest Central, Journal Storage (JSTOR) and the Philippine Council for Health Research and Development – Health Research and Development Information Network (HERDIN). The authors included all studies on self-care practices to manage common acute conditions, namely low back pain, allergic rhinitis, general acute pain, cough, cold, diarrhea, constipation and stress, published up to 2021 in the Philippines. Information on the article type, aim of the study, study design and setting, population characteristics and size, and self-practices employed for the conditions were extracted and synthesized.

Findings

The authors identified various self-care practices for acute conditions among the general population and indigenous peoples in the Philippines from 26 studies included in the review: the use of medicines with and without a prescription, appropriate and inappropriate antibiotic use, use of medicinal plants and other traditional and alternative therapies and products, recreational activities and healthy habits and behaviors, and self-management or seeking care from traditional healers (albularyo or manggagamot) or health professionals. A number of considerations influenced their decision on how to manage symptoms, including perceived severity of the condition, availability and perceived effectiveness of treatment, cost, and advice from trusted sources of health information.

Research limitations/implications

The authors searched five major databases and a local research database, but some studies may still have been missed in the review. The review also excluded intervention studies on the outcomes of self-care, which limits the authors' ability to make conclusions on the effectiveness of the different modalities of self-care.

Social implications

Filipinos engage in a variety of “safe” (or evidence-informed) and “unsafe” (or harmful) self-care practices. While the term “self-care” is not routinely used by the general population and health providers, it is widely enculturated and practiced in the Philippines. Self-care benefits individuals and the health system, but there are also practices that increase risk of adverse outcomes and death including inappropriate antibiotic use, prescription sharing and reuse, and delays in seeking adequate treatment from a health professional. To leverage on self-care in advancing Universal Health Coverage (UHC) goals, the authors recommend a national strategy that provides guidance on how to practice responsible self-care, further research on the effectiveness and safety of alternative medicine and other priority areas, and better integration of self-care in the formal education and health systems. The authors also propose that the research agenda on self-care include acute health conditions, given their impact and burden on health and the economy.

Originality/value

This is the first published review of self-care practices for managing common acute health conditions, which captured practices of various groups and populations including indigenous peoples.

Details

International Journal of Health Governance, vol. 28 no. 4
Type: Research Article
ISSN: 2059-4631

Keywords

Open Access
Article
Publication date: 5 February 2021

Ugochukwu Titus Ugwu

The purpose of this study is to examine gender and rural economic relations of the Nrobo of Southeastern Nigeria. Specifically, the study was designed to examine the subsistence…

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Abstract

Purpose

The purpose of this study is to examine gender and rural economic relations of the Nrobo of Southeastern Nigeria. Specifically, the study was designed to examine the subsistence strategies, gendered role patterns and gender gaps in economic relations of the Nrobo.

Design/methodology/approach

This study used ethnographic methods of participant observation – adopting chitchatting and semi-structured interviews. Also, focus group discussion (FGD) was used to cross-check the validity of data from the other instrument.

Findings

This study found among other things, that although there is still verbal expression of gendered roles division, it does not mirror what actually obtains in society, except bio-social roles. Ideological superiority of men reflects the patrilineal kinship arrangement of society. Theoretically, some of the hypotheses of gender inequality theory were disputed for lack of adequate explanation of gender and economic relations in an egalitarian-reflected society such as Nrobo.

Originality/value

This study, to the best of my knowledge, is the first attempt to ethnographically examine gender and economic relations among this group. As such it adds to the corpus of ethnographies on the Igbo of Southeastern Nigeria.

Details

Journal of Humanities and Applied Social Sciences, vol. 4 no. 3
Type: Research Article
ISSN:

Keywords

Book part
Publication date: 22 August 2016

Eileen Bogweh Nchanji and Imogen Bellwood-Howard

This chapter uses a feminist political ecology perspective to demonstrate how gender interacts with access to land as a re/productive resource in Tamale, a rapidly urbanizing city…

Abstract

Purpose

This chapter uses a feminist political ecology perspective to demonstrate how gender interacts with access to land as a re/productive resource in Tamale, a rapidly urbanizing city in West Africa. The study gives insight into the strategies that vulnerable groups employ to gain access to resources.

Methodology/approach

An ethnographic field study was carried out over 16 months, taking a case study approach involving interviews, participant observation and focus groups.

Findings

Women’s access to land is restricted in order to guarantee their labor for household reproductive tasks and inheritance. Yet they are using various traditional and contemporary strategies to reconcile their landless status with their food provisioning responsibilities. These involve forging networks with individuals and development institutions as well as harvesting and marketing. As land markets accelerate, these strategies become more important, even though they offer no guarantee that a woman can provide what she needs to her household. Formalized institutions aiming to give women access to land do not necessarily fulfill those functions if they are naive of the historical and cultural context.

Practical implications

Marginalization of groups of people, such as women, with regards to resource access is a result of complex interlocking historical processes that are often a result of dominant groups’ efforts to retain power.

Social implications

We confirm that gender is a primary element organizing access to land. The way this is performed in Northern Ghana results from the construction of tradition through post/colonial, religious and neoliberal contexts.

Originality/value

The originality of this work lies in its use of in-depth ethnographic data.

Details

Gender and Food: From Production to Consumption and After
Type: Book
ISBN: 978-1-78635-054-1

Keywords

Article
Publication date: 20 June 2008

Soledad Natalia M. Dalisay

The purpose of this study is to describe how the people in two coastal communities in Batangas and Mindoro respond to the effects of these seasonal changes on their lives and…

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Abstract

Purpose

The purpose of this study is to describe how the people in two coastal communities in Batangas and Mindoro respond to the effects of these seasonal changes on their lives and livelihood.

Design/methodology/approach

The study makes use of findings from a previous study conducted by the author in Batangas and from primary data gathered in Mindoro through interviews with key informants.

Findings

The study shows that people in the two communities visited viewed the monsoon rains and typhoons brought about by seasonal changes as being part of the daily life challenges they had to face. The rainy season was also the lean food season which they called inaagosto in Batangas and nordeste in Mindoro. Hence, their responses were mostly at the individual or household level, rarely taking advantage of community programs and projects that could help them survive the lean food season. Although divided by a body of water, the people in Batangas and Mindoro employed very similar strategies. These strategies included negotiating for entitlements, engaging in extra‐income‐earning activities, and reallocating scarce food resources in the home. They differed, however, in ways in which they had “reinvented” food during the lean season. In both communities, coping was seen to be gendered.

Practical implications

The paper provides an understanding of how people respond to hazards that accompany the lean season and how best to approach these responses to achieve optimum results that would truly address the challenges faced by affected communities.

Originality/value

The paper contributes to the development of more appropriate programmes and projects that would alleviate the effects of inaagosto and nordeste.

Details

Disaster Prevention and Management: An International Journal, vol. 17 no. 3
Type: Research Article
ISSN: 0965-3562

Keywords

Article
Publication date: 1 July 1997

Lianzela

Outlines the natural features of Mizoram ‐ climate, flora, fauna. Describes the cultivation systems employed and the problems generated ‐ erosion, burning, harm to indigenous…

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Abstract

Outlines the natural features of Mizoram ‐ climate, flora, fauna. Describes the cultivation systems employed and the problems generated ‐ erosion, burning, harm to indigenous plants and animals. Concludes by addressing the need to protect and conserve the natural forests and wild life.

Details

International Journal of Social Economics, vol. 24 no. 7/8/9
Type: Research Article
ISSN: 0306-8293

Keywords

Article
Publication date: 24 December 2021

Solomon Rajkumar, Renuka Nayar, Kavitha Rajagopal, Namratha Valsalan, Sudharsan Chinnasamy, V. N. Vasudevan, Sathu Thankachan and N. Manjunath

The purpose of this paper is the physico-chemical, microbiological, colorimetric, sensorial characterization of choris, a traditional smoked pork sausage produced in the state of…

Abstract

Purpose

The purpose of this paper is the physico-chemical, microbiological, colorimetric, sensorial characterization of choris, a traditional smoked pork sausage produced in the state of Goa (India), including its storage stability (0–180 days) at room temperature, aiming at the geographical indication certification and entrepreneurship prospects.

Design/methodology/approach

A total of 48 samples of “choris” were collected from 24 villages of Goa and were analyzed at different intervals (0–180 days) for physico-chemical, proximate, microbiological, colorimetric and sensory attributes during the storage at room temperature.

Findings

The mean pH of 4.45 and water activity (aw) of 0.78 were recorded. The pH, tyrosine value, fat percentage and free fatty acid content registered a significant increase, whereas moisture content, aw and moisture–protein ratio reduced as storage progresses. The colorimetric values lightness (L*), hue angle (H*) and redness index values reduced significantly during storage. The mean total viable count, yeast and mold, and lactic acid bacteria count were found to proliferate significantly as storage advanced. Nevertheless, the hedonic scores not reaching an unacceptable level (= 4) at the end of the storage period.

Originality/value

In accordance with the various parameters adopted during the study, choris could be characterized as “naturally fermented dry smoked” sausages, which were shelf-stable at room temperature for 180 days. The product characterization of choris is essential to guarantee the genuineness, safety and consumer's acceptability. This study will also rebound in an augmented uniformity of the product, which will favor the geographical indication certification and the entrepreneurship prospects of this traditional product.

Details

British Food Journal, vol. 124 no. 11
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 3 March 2022

Haining Guan, Chunmei Feng, Xiaojun Xu, Weiting Sun, Jianchun Han, Dengyong Liu and Xiaoqin Diao

This study aims to investigate the influence of soy protein isolate hydrolysates (SPIH) obtained using 4 h hydrolysis under 200 MPa on proximate composition, cooking loss…

Abstract

Purpose

This study aims to investigate the influence of soy protein isolate hydrolysates (SPIH) obtained using 4 h hydrolysis under 200 MPa on proximate composition, cooking loss, textural properties, color, water distribution, microstructure, thiobarbituric acid reactive substance (TBARS) value and carbonyl and sulfhydryl contents of emulsion sausages.

Design/methodology/approach

Sausages with SPIHs at four concentrations (0, 1.0, 2.0 and 3.0%) were prepared, and the sausage with 0.01% butylated hydroxyanisole (BHA) was used as a positive control. Some sausages were selected for the analyses of quality characteristics and microcosmic properties. Other sausages were stored under 4 °C for 0, 7, 14, 21 and 28 days to investigate the oxidative stability.

Findings

The addition of SPIHs at various levels (0–3.0%) or 0.01% BHA did not affect the proximate composition (protein, fat and ash) of emulsion sausages. The addition of 2.0% SPIH decreased cooking loss and increased moisture content, hardness, springiness, chewiness, resilience and L* value, compared to the sausages without SPIH and with 0.01% BHA (p < 0.05). Furthermore, low-field nuclear magnetic resonance results suggested that sausages with 2.0% SPIH had the shortest T2 relaxation time. In addition, 2.0% SPIH and 0.01% BHA could inhibit the oxidation of emulsion sausages when compared with the sample without SPIH (p < 0.05). Moreover, there were no differences between sausages with 2.0% SPIH and 0.01% BHA (p > 0.05).

Originality/value

These findings confirmed that the 2.0% SPIH obtained under 200 MPa can be used as a natural additive to improve quality properties and antioxidant potential of emulsion sausages during storage.

Details

British Food Journal, vol. 124 no. 12
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 8 May 2017

Demelash Hailu Mitiku and Tilahun Abera Teka

The purpose of this study was to compare the nutrient and antinutrient content of two improved sweet potato varieties released for drought prone areas of eastern Ethiopia.

Abstract

Purpose

The purpose of this study was to compare the nutrient and antinutrient content of two improved sweet potato varieties released for drought prone areas of eastern Ethiopia.

Design/methodology/approach

Matured roots of two sweet potato varieties, namely, Berkume and Adu, were collected from Haramaya University, Toni Research Farm, Ethiopia. The sweet potatoes were ground into flour following standard procedure. Thereafter, proximate, dietary minerals and β-carotene were determined by official methods of analysis. The tannin and phytate contents were determined by colorimetric methods.

Findings

The moisture, protein, fat, fiber, ash, utilizable carbohydrate and gross energy varied from 6.23-6.61 per cent, 2.07-2.76 per cent, 1.25-1.52 per cent, 1.04-1.16 per cent, 3.38- 5.32 per cent, 90.03-91.45 per cent and 382.18-388.07 Kcal/100 g in both the sweet potato varieties. Potassium content (176.17 mg/100 g) was reported to be the highest and registered in Berkume variety, while the lowest mineral content (2.18 mg/100 g) determined was zinc in Adu sweet potato variety. The highest total carotenoid content (3.39mg/100 g) was recorded in Berkume sweet potato variety. The tannin and phytic acid contents ranged from 9.98 to 12.94 mg/100 g and from 0.24 to 0.31 mg/100 g in Berkume and Adu sweet potato varieties, respectively.

Originality/value

This study showed that the Berkume sweet potato variety has high nutritional potential and less antinutrient contents as compared with the nutritional value of many other roots and tuber crops documented in the FAO database and hence can contribute to reducing malnutrition in resource-poor settings of Ethiopia. Further work needs to be carried out on developing value-added products from Berkume sweet potato variety for its extensive utilization.

Details

Nutrition & Food Science, vol. 47 no. 3
Type: Research Article
ISSN: 0034-6659

Keywords

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