Novel Approach for Controlling Lipid Oxidation and Melanosis in Aquacultured Fish and Crustaceans: Application of Edible Mushroom (Flammulina velutipes) Extract In Vivo

  • Balisi A
  • Duy Bao H
  • Nagasaka R
  • et al.
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Abstract

Abstract Long-haul travel does not constitute an obstacle for tourists to travel and is fast gaining the attention of tourists in new and unique experiences. This study was conducted to identify the long-haul travel motivation by international tourists to Penang. A total of 400 respondents participated in this survey, conducted around the tourist attractions in Penang, using cluster random sampling. However, only 370 questionnaires were only used for this research. Data were analysed using SPSS software 22 version. The findings, ‘knowledge and novelty seeking’ were the main push factors that drove long-haul travel by international tourists to Penang. Meanwhile, the main pull factor that attracts long- haul travel by international tourists to Penang was its ‘culture and history’. Additionally, there were partly direct and significant relationships between socio-demographic, trip characteristics and travel motivation (push factors and pull factors). Overall, this study identified the long-haul travel motivations by international tourists to Penang based on socio-demographic, trip characteristics and travel motivation and has indirectly helped in understanding the long-haul travel market particularly for Penang and Southeast Asia. This research also suggested for an effective marketing and promotion strategy in pro- viding useful information that is the key to attract international tourists to travel long distances. Keywords:

Figures

  • Fig. 1. Reactions of polyunsaturated fatty acids leading to quality and nutritional changes in foods (Erickson, 1992).
  • Table 1. Lipid oxidation factors in food (Frankel, 1998).
  • Fig. 2. DPPH radical scavenging activity of the mushroom (Flammulina velutipes) extract. Results are presented in terms of mean ± standard deviation (n = 3) (Bao et al., 2009a).
  • Fig. 3. Changes in the total lipid hydroperoxide level of yellowtail (Seriola quinqueradiata) dark muscle during chilled storage. ( ), fed a diet without mushroom extract; ( ), fed with diet containing 1% concentrated mushroom extract; ( ), fed with diet containing 10% mushroom extract. Data are presented in terms of mean ± standard deviation (n = 5). The values with different superscript letters represent significant difference (P < 0.05) (Bao et al., 2009a).
  • Fig. 4. Changes in the metmyoglobin content of yellowtail (Seriola quinqueradiata) dark
  • Fig. 5. Proposed mechanism for ERT-delayed oxidation of lipid and myoglobin in minced big eye tuna (Thunnus obesus) meat to which F. velutipes extract has been added (Bao et al., 2009b).
  • Fig. 6. Induction of the prophenoloxidase (proPO) cascade in the invertebrate immunity. Pathogen-associated molecular patterns (PAMPs; e.g., peptidoglycans, lipopolysaccharides, and ┚-1,3-glucans) are bound by host recognition proteins. This initiates a serine proteinase cascade that leads to the conversion of zymogenic proPO into catalytically active phenoloxidase and ultimately results in the generation of cytotoxic products and encapsulation of the pathogen (Cerenius et al., 2008).
  • Fig. 7. Catalytic cycles of the hydroxylation of monophenol and oxidation of o-dipehol to oquinone by tyrosinase (Kim and Uyama, 2005).

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APA

Balisi, A., Duy Bao, H. N., Nagasaka, R., & Ohshim, T. (2012). Novel Approach for Controlling Lipid Oxidation and Melanosis in Aquacultured Fish and Crustaceans: Application of Edible Mushroom (Flammulina velutipes) Extract In Vivo. In Aquaculture. InTech. https://doi.org/10.5772/30817

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