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National Agricultural Research Centre (NARC), Islamabad  established in 1984, is the largest research centre of the Pakistan Agricultural Research Council (PARC). NARC, with a total land area of approximately 1400 acres, is located near Rawal Lake, six kilometers south-east of Islamabad. Physical facilities in term of experimental fields, laboratories, green houses, gene bank, library/ documentation, auditorium, machinery & lab equipment repair workshops, stores, hostels, cafeteria, audio visual studios, are also available at NARC.

Journal Article

Journal article

Ginger (Zingiber officinale) oil as an antimicrobial agent for minimally processed produce: A case study in shredded green papaya  [2011]

Sa-Nguanpuag, K. (King Mongkut's Univ. of Technology, Bangkok (Thailand). Division of Postharvest Technology); Kanlayanarat, S. (King Mongkut's Univ. of Technology, Bangkok (Thailand). Division of Postharvest Technology); Srilaong, V. (King Mongkut's Univ. of Technology, Bangkok (Thailand). Division of Postharvest Technology); Tanprasert, K. (King Mongkut's Univ. of Technology, Bangkok (Thailand). Dept. of Printing and Packaging Technology); et al.

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The capacity of ginger oils, extracted by different method (hydrodistillation & solvent extraction method), to inhibit microorganisms was studied both in vitro and in vivo. Chemical compounds in oil extracts, their antimicrobial activity and Minimum Inhibition Concentration (MIC) were determined on shredded green papaya. It was found that the major constituents of ginger oil extracted by hydrodistillation method were camphene, 1, 8-cineol and alpha-pinene, while for oil obtained by solvent extraction they were beta-phellandrene and 1,8-cineol. The extracts obtained by both extraction methods inhibited Bacillus subtilis, Bacillus nutto, Pseudomonas aerugenosa, Rhodoturola sp., Samonella newport DMST 15675, Samonella enteritidis DMST 15676 and Fusarium sp. There was however, no effect on growth rate of Escherichia coli, Campylobactor coli NTCT 11353 and Campylobacteor jejuni ATCC 33291. Moreover, the MIC of both ginger oil solutions were not significantly different. In case of shredded green papaya, samples were treated with ginger oil (0, 5, 10 & 15 muL) and kept at 13 degree C for 4 days. The results showed that the growth rate of microorganisms was suppressed well in applied package with 5 and 10 muL ginger oils, while with 15 muL ginger oil reduction in growth rate was observed. Major volatiles detected in headspace of treated package were alpha-pinene, camphene, beta-phellandrene and 1, 8-cineol. Thus, Ginger oils can be used to reduce the population of
microorganisms in shredded green papaya and probably also in other fresh produce and minimally processed products.

From the journal

International Journal of Agriculture and Biology (Pakistan)

ISSN : 1560-8530