Post-harvest control strategies: Minimizing mycotoxins in the food chain

被引:387
|
作者
Magan, Naresh [1 ]
Aldred, David [1 ]
机构
[1] Cranfield Univ, Appl Mycol Grp, Bedford MK45 4DT, England
关键词
drying; dry matter loss; mycotoxins; cereals; preservation; spoilage fungi;
D O I
10.1016/j.ijfoodmicro.2007.07.034
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Contamination of cereal commodities by moulds and mycotoxins results in dry matter, quality, and nutritional losses and represents a significant hazard to the food chain. Most grain is harvested, dried and then stored on farm or in silos for medium/long term storage. Cereal quality is influenced by a range of interacting abiotic and biotic factors. In the so-called stored grain ecosystem, factors include grain and contaminant mould respiration, insect pests, rodents and the key environmental factors of temperature, water availability and intergranular gas composition, and preservatives which are added to conserve moist grain for animal feed. Thus knowledge of the key critical control points during harvesting, drying and storage stages in the cereal production chain are essential in developing effective prevention strategies post-harvest. Studies show that very small amounts of dry matter loss due to mould activity can be tolerated. With < 0.5% dry matter loss visible moulding, mycotoxin contamination and downgrading of lots can occur. The key mycotoxigenic moulds in partially dried grain are Penicillium verrucosum (ochratoxin) in damp cool climates of Northern Europe, and Aspergillus flavus (aflatoxins), A. ochraceus (ochratoxin) and some Fusarium species (fumonisins, trichothecenes) on temperate and tropical cereals. Studies on the ecology of these species has resulted in modelling of germination, growth and mycotoxin minima and prediction of fungal contamination levels which may lead to mycotoxin contamination above the tolerable legislative limits (e.g. for ochratoxin). The effect of modified atmospheres and fumigation with sulphur dioxide and ammonia have been attempted to try and control mould spoilage in storage. Elevated CO2 of > 75% are required to ensure that growth of mycotoxigenic moulds does not occur in partially dried grain. Sometimes, preservatives based on aliphatic acids have been used to prevent spoilage and mycotoxin contamination of stored commodities, especially feed. These are predominantly fungistats and attempts have been made to use alternatives such as essential oils and anti-oxidants to prevent growth and mycotoxin accumulation in partially dried grain. Interactions between spoilage and mycotoxigenic fungi and insect pests inevitably occurs in stored grain ecosystems and this can further influence contamination with mycotoxins. Effective post-harvest management of stored commodities requires clear monitoring criteria and effective implementation in relation to abiotic and biotic factors, hygiene and monitoring to ensure that mycotoxin contamination is minimised and that stored grain can proceed through the food chain for processing. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:131 / 139
页数:9
相关论文
共 50 条
  • [21] Coping Strategies of Post-harvest Loss Study Based on Agricultural Products Supply Chain
    Tang, Ke-Sheng
    2015 2ND INTERNATIONAL CONFERENCE ON SOCIAL SCIENCE (ICSS 2015), 2015, : 108 - 112
  • [22] Fostering Awareness on Environmentally Sustainable Technological Solutions for the Post-Harvest Food Supply Chain
    Fernandez, Carlos M.
    Alves, Joel
    Gaspar, Pedro Dinis
    Lima, Tania M.
    PROCESSES, 2021, 9 (09)
  • [23] Application of bacteriophages in post-harvest control of human pathogenic and food spoiling bacteria
    Perez Pulido, Ruben
    Grande Burgos, Maria Jose
    Galvez, Antonio
    Lucas Lopez, Rosario
    CRITICAL REVIEWS IN BIOTECHNOLOGY, 2016, 36 (05) : 851 - 861
  • [24] International Commission on Trichinellosis: Recommendations on post-harvest control of Trichinella in food animals
    Noeckler, Karsten
    Pozio, Edoardo
    van der Giessen, Joke
    Hill, Dolores E.
    Gamble, H. Ray
    FOOD AND WATERBORNE PARASITOLOGY, 2019, 14
  • [25] POST-HARVEST HANDLING PRACTICES AND POST-HARVEST DISEASES OF FRUIT
    SOMMER, NF
    PLANT DISEASE, 1982, 66 (05) : 357 - 364
  • [26] Post-harvest management and post-harvest losses of cereals in Ethiopia
    H. Hengsdijk
    W. J. de Boer
    Food Security, 2017, 9 : 945 - 958
  • [27] Post-harvest management and post-harvest losses of cereals in Ethiopia
    Hengsdijk, H.
    de Boer, W. J.
    FOOD SECURITY, 2017, 9 (05) : 945 - 958
  • [28] HARVEST AND POST-HARVEST LOSSES
    MAJUMDER, SK
    NUTRITION REPORTS INTERNATIONAL, 1975, 11 (01): : 85 - 86
  • [29] THE VALUE OF OUTLOOK INFORMATION IN POST-HARVEST MARKETING STRATEGIES
    RISTER, ME
    SKEES, JR
    AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS, 1982, 64 (05) : 1081 - 1082
  • [30] FLEXIBLE POST-HARVEST MARKETING STRATEGIES FOR PINTO BEANS
    KING, RP
    LYBECKER, DW
    AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS, 1981, 63 (05) : 1040 - 1040