Brown seaweed (Saccharina japonica) as an edible natural delivery matrix for allyl isothiocyanate inhibiting food-borne bacteria.
The edible, brown seaweed Saccharina japonica was prepared as powder in the size range 500-900 μm for the desorption release of allyl isothiocyanate (AITC). Powders were used as raw (containing lipids) and as de-oiled, where the lipid was removed. In general, de-oiled powders adsorbed larger masses of AITC after vapour or solution contact. Mass adsorbed due to solution contact exceeded vapour contact. Larger particles adsorbed more than smaller particles. No chemical bonding between AITC and the powder surface occurred. Release from vapour deposited particles reached 70-85% available within 72 h; solution deposited reached 70-90% available at 192 h. The larger amounts of AITC adsorbed via solution deposition resulted in greater vapour-phase concentrations at 72 h for antimicrobial activity studies. No loss of activity was detected against Escherichia coli, Salmonella Typhimurium or Bacillus cereus. Only a nominal activity against Staphylococcus aureus was demonstrated. S. japonica powder could be used as an edible, natural vehicle for AITC delivery.
Department of Food Science and Technology, Pukyong National University, Yongso-ro 45, Nam-Gu, Busan 608-737, Republic of Korea.
Evi Amelia
EA
Siahaan
Center for Molecular and Materials Sciences, School of Pharmacy and Medical Sciences and Sansom Institute, University of South Australia, Adelaide, SA 5001, Australia.
Phillip
P
Pendleton
Department of Chemical Engineering, Pukyong National University, Sinseon-ro 365, Nam-Gu, Busan 608-739, Republic of Korea.
Hee-Chul
HC
Woo
Department of Food Science and Technology, Pukyong National University, Yongso-ro 45, Nam-Gu, Busan 608-737, Republic of Korea. Electronic address: bschun@pknu.ac.kr.
Byung-Soo
BS
Chun
D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects / Q000254:growth & development; D004337:Drug Carriers / Q000737:chemistry; D016503:Drug Delivery Systems / Q000295:instrumentation*; D005516:Food Microbiology; D017879:Isothiocyanates / Q000737:chemistry* / Q000494:pharmacology*; D007700:Kinetics; D010316:Particle Size; D000459:Phaeophyceae / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D012624:Seaweed / Q000737:chemistry*
D000900:Anti-Bacterial Agents; D004337:Drug Carriers; D017879:Isothiocyanates; D010936:Plant Extracts; C004471:allyl isothiocyanate
Adsorption; Allyl isothiocyanate; Antimicrobial activity; Bacteria; Desorption; Saccharina japonica