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Article
Publication date: 8 December 2020

Yu-Ming Chung, Shao-Yu Lee, Yung-Kai Lin, Yung-Hao Lin, Mohamed El-Shazly, Yung-Hsiang Lin and Chi-Fu Chiang

Rambutan (Nephelium lappaceum), a ubiquitous fruit in Southeastern Asia, was rich in vitamins and phytochemicals, which were beneficial for improving of skin conditions. The…

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Abstract

Purpose

Rambutan (Nephelium lappaceum), a ubiquitous fruit in Southeastern Asia, was rich in vitamins and phytochemicals, which were beneficial for improving of skin conditions. The fermentation process increased phytochemicals and antioxidant capacity. Thus, the purpose of this paper is to examine whether phytochemicals can be increased through the fermentation process of rambutan extracts to improve skin aging.

Design/methodology/approach

In this study, the authors used the three stages of fermentation with Saccharomyces cerevisiae, Lactobacillus plantarum TCI028 and Acetobacter aceti under red light to develop a fermented rambutan extract.

Findings

The level of polyphenols of red-light-based fermented rambutan extract (RLFRE) were significantly increased 108.9% (p < 0.01) and 97% (p <0.01) compared with fermented rambutan extract (FRE) and pure rambutan extract (RE), respectively. The human skin fibroblasts treated with 0.03 or 0.06% of RLFRE can significantly decrease reactive oxygen species (ROS) levels by 0.74- (p <0.001) and 0.84-fold (p <0.001) compared with H2O2 group, respectively. And 0.03% of RLFRE can significantly increase in elastin content by 1.13-fold (p <0.05). Also, ten compounds were identified including one new phenolic compound and nine known compounds from RLFRE. Moreover, red light could enhance the levels of compounds 4, 9 and 3 by 5, 2.5 and 2.5-fold, respectively, relative to the results of FRE. The last, RLFRE isolated compounds significantly facilitated the elastin content on fibroblast (compound 1, 7, 9, 10 compared with control: p <0.001, compound 2 compared with control: p <0.001).

Originality/value

In short, this was the first study to unveil that the red-light-based fermentation can enrich the antioxidant content in a rambutan extract and its product had the potential to be developed a functional product for health-promoting effects such as skin aging.

Details

Nutrition & Food Science , vol. 51 no. 6
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 2 October 2017

Roungdao Klinjapo, Kamonchanok Areerat and Pornpong Sutthirak

The purpose of this paper is to investigate the potential of fruit waste materials from fruit industry as sources of powerful natural antioxidants.

Abstract

Purpose

The purpose of this paper is to investigate the potential of fruit waste materials from fruit industry as sources of powerful natural antioxidants.

Design/methodology/approach

The peels of mango, rambutan, and santol were extracted and analyzed for their antioxidant activity. Pork ball samples were prepared and treated with different natural extracts at various concentrations, namely 0.05, 0.10, 0.15, and 0.20% (v/w), compared with the control (no natural extract), and then stored at 4°C. The samples were investigated at the zeroth, third, fifth, eighth and tenth day to find out the antioxidant activity of the total phenolic content and lipid oxidation including the evaluation of the change of rancid flavor and color during storage. All statistical results were analyzed by RCBD using SPSS at p⩽0.05.

Findings

During storage, the amount of phenolic compound in a pork ball by adding fruit extracts at various concentrations slightly decreased, while the lipid oxidation slightly increased. Mango extract showed the best efficiency to delay lipid oxidation in the pork ball for ten days followed by santol extract and rambutan extract. For sensory evaluation, the pork ball with fruit extract at various concentrations showed the lower rancidity development than control, and mango extract at 0.20% (v/w) showed the best delaying rancidity during ten-day storage. Thus, mango peel extract at 0.20% (v/w) showed the highest effectiveness of antioxidant activity against lipid oxidation in pork ball.

Originality/value

This study was continued from the previous research which investigated the best extraction condition for by-products of mango, rambutan, and santol. From that study, the authors found that the crude extracts need further research on their antioxidant property in foods. The research findings have provided information regarding the interesting new natural antioxidant that can be applied into lipid-containing foods to delay the rancidity and extend the shelf life.

Details

British Food Journal, vol. 119 no. 10
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 17 May 2013

Pin‐Rou Lee, Rou‐Ming Tan, Bin Yu, Philip Curran and Shao‐Quan Liu

The purpose of this study was to characterise the physiochemical properties of selected exotic seasonal tropical fruits available in Singapore.

Abstract

Purpose

The purpose of this study was to characterise the physiochemical properties of selected exotic seasonal tropical fruits available in Singapore.

Design/methodology/approach

A total of 11 seasonal tropical fruits including cempedak, chiku, custard apple, jackfruit, longkong, mangosteen, red jambu, pearl jambu, rambutan, salak and starfruit were analyzed for their sugars, organic acids and free phenolic acids composition using liquid chromatographic methods. Total phenolic content (free and bound), total soluble solids and pH were determined using Folin‐Ciocalteu method, refractometer and pH meter, respectively.

Findings

Fructose, glucose and sucrose were the main sugars in all the fruits. Cempedak had the highest sucrose concentration, while custard apple had the highest content of fructose and glucose. Malic and citric acids were the major organic acids in most of the fruits, except for pearl jambu and red jambu where succinic acid was the dominant acid. The total phenolic content varied from 122.94 to 712.20 mg gallic acid equivalent (GAE)/kg fresh weight (FW). Ferulic (0.631 mg/kg) and sinapic acids (1.506 mg/kg) were the predominant free phenolic acids in custard apple, while caffeic acid was the main free phenolic acid in jackfruit, salak and starfruit.

Originality/value

The paper demonstrates that the physiochemical characteristics of the 11 tropical fruits varied markedly, which is responsible for the differential flavour and stability. The findings are useful for epidemiological research and predicting the degree of ripeness, stability and post‐harvest processing required for these fruits.

Details

Nutrition & Food Science, vol. 43 no. 3
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 13 July 2012

Yanee Srimanee and Jayant Kumar Routray

The main objective of this paper is to identify and study the marketing chains of fresh fruit and vegetables (FFV) in Thailand, the linkages of FFV farmers with supermarkets, and…

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Abstract

Purpose

The main objective of this paper is to identify and study the marketing chains of fresh fruit and vegetables (FFV) in Thailand, the linkages of FFV farmers with supermarkets, and an evaluation of supermarket procurement systems. Another aim is to discuss the policies and implications relating to FFV and the connection of farmers with supermarkets in the context of Thailand.

Design/methodology/approach

The paper uses both secondary and primary data. Public agencies' documents and published reports were used to describe retailing and FFV policy of Thailand. The supermarket managers and chain stakeholders were interviewed about the FFV marketing chains and supermarkets' procurement system. Policy issues were discussed with policymakers, and extracted from relevant documents.

Findings

The government has made various attempts to improve the FFV market by promoting both domestic and export markets simultaneously thus improving production efficiency. Supermarkets play important roles in connecting farmers to markets through direct procurement while improving cultivation practices of participating farmers in order to enhance quality of produce. A number of policy gaps still exist to protect the interests of the farmers in maximizing their benefits, and in the areas of participation between public and private sectors.

Practical implications

The findings, which are derived from FFV stakeholders and comparative studies in developing countries, are that FFV policy gaps exist.

Originality/value

This paper can help policymakers, private sector and researchers to formulate appropriate policies in the future and catalyse the FFV marketing through supermarket channels while protecting farmers' interests.

Details

International Journal of Retail & Distribution Management, vol. 40 no. 9
Type: Research Article
ISSN: 0959-0552

Keywords

Article
Publication date: 11 September 2020

Seok Shin Tan, Seok Tyug Tan and Chin Xuan Tan

Salak (Salacca zalacca) is an underutilised fruit. The bioactivities of this fruit have rarely been studied scientifically. Thus, the present study aimed to determine the…

Abstract

Purpose

Salak (Salacca zalacca) is an underutilised fruit. The bioactivities of this fruit have rarely been studied scientifically. Thus, the present study aimed to determine the antioxidant activity of extracts derived from the peel, fruit and kernel of the Salak fruit, as well as the hypoglycemic and anti-hypertensive properties of Salak peel extracts.

Design/methodology/approach

The peel, fruit and kernel of the Salak were extracted using distilled water, methanol and ethanol. Antioxidant activities, angiotensin-converting enzyme (ACE) and alpha-amylase inhibition properties of the extracts were estimated via in vitro standard methods. Besides, the total phenolic content (TPC) and total flavonoid content (TFC) of the extracts were also determined in the present study. The antioxidant activities of different parts of Salak extracts were determined by ferric-reducing antioxidant power (FRAP) and Trolox equivalent antioxidant capacity (TEAC) methods. Percent of radical scavenging properties were calculated via DPPH assay. The hypoglycemic and anti-hypertensive properties of Salak peel were evaluated using alpha-amylase inhibition and ACE assays, respectively.

Findings

Fruit extracts of Salak in methanol were found to exhibit the highest TPC (10.27 ± 0.12 mg GAE/g), TFC (11.04 ± 0.89 mg CE/g) and antioxidant properties amongst all samples whereby the TPC and TFC were strongly correlated with antioxidant activities. On the other hand, distilled water extracted Salak kernel showed to have the lowest TPC (0.53 ± 0.05 mg GAE/g), TFC (0.37 ± 0.01 mg CE/g) and antioxidant properties amongst all the Salak extracts. Peel extracts exhibit comparable antioxidant activities with fruit extracts in the current findings. In addition, peel extracts indicated some extend of ACE and alpha-amylase inhibition activities regardless of the solvents used. Methanol and ethanol peel extracts indicated no significant difference (p < 0.05) ACE (98%) and alpha-amylase (90%) inhibition activities. However, distilled water extracted Salak peel showed significantly lower ACE and alpha-amylase inhibition in comparison to methanol and ethanol peel extracts.

Originality/value

The present findings suggested that the fruit of Salak exhibits the highest antioxidant properties, followed by the peel and lastly, the kernel, which shows the lowest antioxidant properties amongst all the samples. The results also indicated that the peel extracts have ACE and alpha-amylase inhibition activities.

Details

British Food Journal, vol. 122 no. 10
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 12 January 2010

Rosidah Musa, Faridah Hassan, Jamaliah Mohd Yusof and Norzaidi Mohd Daud

The purpose of this paper is to seek to illuminate the challenges and potentials that might be encountered by the exporters of Malaysian's tropical fruits, particularly the…

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Abstract

Purpose

The purpose of this paper is to seek to illuminate the challenges and potentials that might be encountered by the exporters of Malaysian's tropical fruits, particularly the Harumanis mango into the Japanese market.

Design/methodology/approach

The research method utilised in the study were in‐depth interview with appropriate government authorities, fruit traders, importers and retailers in Malaysia and Japan.

Findings

The findings suggest that to succeed in this challenging and competitive yet lucrative market environment, it is vital that farmers, fruit exporters and relevant government agencies implicitly understand the aforementioned regulations, procedures and the Japanese trend of fruit consumption.

Research limitations/implications

The study focuses on the challenges and potential of Malaysian's tropical fruits, especially Harumanis mango into the Japanese market.

Practical implications

The results provide insights to the Malaysian agricultural sector and other organizations of similar structures of how they could market tropical fruits into the Japanese market.

Originality/value

This study is perhaps one of the first to investigate on the challenges and potentials of Harumanis mango into the Japanese market.

Details

Business Strategy Series, vol. 11 no. 1
Type: Research Article
ISSN: 1751-5637

Keywords

Article
Publication date: 1 August 1992

D. Henderson

Reviews the UK market for exotic fruit and vegetable products withdetailed consideration of the mango, papaya, avocado and pineapplemarkets. Concludes that there are opportunities…

Abstract

Reviews the UK market for exotic fruit and vegetable products with detailed consideration of the mango, papaya, avocado and pineapple markets. Concludes that there are opportunities for growth in this market despite infrequent. not regular. purchasing and the consumer′s perception of the products as expensive and a risk. Risk can be reduced by attention to quality at point of sale – ripe and ready to eat. Recommends common marketing strategies for an extending range of products with supermarkets the best distribution channels.

Details

British Food Journal, vol. 94 no. 8
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 22 May 2009

Sitti Aralas, Maryati Mohamed and Mohd Fadzelly Abu Bakar

Salak (Salacca zalacca) is a species of palm tree native to Malaysia and Indonesia. The fruit is also known as “snake fruit” due to its reddish‐brown scaly skin. Four different…

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Abstract

Purpose

Salak (Salacca zalacca) is a species of palm tree native to Malaysia and Indonesia. The fruit is also known as “snake fruit” due to its reddish‐brown scaly skin. Four different varieties of the fruits (i.e. SS1, SS2, SS3 and SS4) have been established by Sabah State Agriculture Department, Malaysia. The purpose of this paper is to investigate and compare the antioxidant properties and phytochemicals content in the edible portion of the fruits.

Design/methodology/approach

Four different varieties of the fruits were collected and analysed for the antioxidant properties (2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) and ferric reducing/antioxidant power (FRAP) assay), total phenolic and total flavonoid contents using spectrophotometry analysis. Ascorbic acid was determined using titration method.

Findings

The results showed the total phenolic and flavonoid contents of the samples were in the range of 12.6‐15.0 mg gallic acid equivalent/g and 4.9‐7.1 mg catechin equivalent/g of dry sample, respectively. The antioxidant activities of the extracts (using DPPH assay) were highly correlated with total phenolic and moderately correlated with flavonoid content. The reducing capabilities of the extracts using FRAP assay were moderately correlated with all phytochemicals tested. The results suggested that the phytochemicals and antioxidant activity of salak is mildly affected by variety. The high phytochemicals and antioxidant properties of S. zalacca indicated that the fruit possessed potential health benefits properties.

Originality/value

Salak fruit is now being developed into fruit juice, pickle and other food products. The commercialization of the fruit may be enhanced if more knowledge on its potential health benefits is studied and discovered. The economic and nutraceutical values might increase and will contribute greatly to the local people.

Details

Nutrition & Food Science, vol. 39 no. 3
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 1 May 1991

John West is one of Britain's most famous and best known brands, easily recognised on any supermarket shelf, not only for its canned fish products, but also for a wide range of…

Abstract

John West is one of Britain's most famous and best known brands, easily recognised on any supermarket shelf, not only for its canned fish products, but also for a wide range of other canned food lines, which include fruits, in particular fruits in juice, and meats, such as corned beef. But it's for its fish that John West is best known, having earned an unrivalled reputation for quality and excellence among all its customers. From the ever popular salmon and tuna, to more specialist items such as dressed crab or king prawns, John West Foods prides itself in supplying the very best possible product.

Details

Nutrition & Food Science, vol. 91 no. 5
Type: Research Article
ISSN: 0034-6659

Article
Publication date: 5 February 2021

Chin Xuan Tan, Seok Shin Tan, Hasanah Mohd Ghazali and Seok Tyug Tan

Thompson red avocado is a bright red-coloured fruit when ripe. As the global market for avocado fruit is increasing, this unique avocado variety could potentially be the savory…

Abstract

Purpose

Thompson red avocado is a bright red-coloured fruit when ripe. As the global market for avocado fruit is increasing, this unique avocado variety could potentially be the savory fruit for consumers. The study aimed to evaluate the physicochemical properties of different parts of Thomson red avocado fruit.

Design/methodology/approach

Physical parameters were measured using a calibrated digital balance and a vernier caliper. The methods of the Association of Official Analytical Chemists (AOAC) and a calibrated digital pH meter were used to measure the proximate composition and pH values of different fruit parts. Meanwhile, the total soluble solids and titratable acidity were determined using titration methods.

Findings

Thompson red avocado is a medium-sized fruit with an average mass, length and diameter of 216.92 g, 9.50 and 7.20 cm, respectively. The major part of the fruit is pulp (56.01%), followed by seed (33.04%) and peel (10.94%). Each of these fruit parts was further investigated for their proximate composition, pH, titratable acidity and total soluble solids. All the fruit parts were found to be low in protein (<1%) and titratable acidity (<0.42%), but high in moisture content (>60%). The pH of these fruit parts was in the range of 5.04–5.59. Compared to the peel and seed, the pulp has the highest crude fat (20.79%), but the lowest ash content (1.47%), total carbohydrates (3.39%) and total soluble solids (7.83 ºBrix).

Originality/value

The physical and chemical properties of the commercial avocado varieties such as Fortuna, Collinson, Hass and Barker are well-documented in the literature. Unlike typical avocado fruits, which change from green into dark black, dark green or deep purplish colour when ripe, Thompson red variety changes into red colour when ripe. As the global market for avocado fruit is increasing, the unique, bright-red-coloured Thompson red avocado could potentially be the savoury fruit for consumers. Previous studies reported the nutritional composition of avocado fruit is affected by variety and geographical locations, but the data on the nutritional profile of Thompson red avocado fruit are scarce. Therefore, this study was carried out to determine the physical properties and nutrient contents of Thompson red avocado fruit.

Details

British Food Journal, vol. 124 no. 5
Type: Research Article
ISSN: 0007-070X

Keywords

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