Flender/Flender Gear Units/Helical gear box H4
iologicalcharacteristics of the disease must be assessed since it is possible that at detectable levels,the pathogen has already spread through

or proliferated to the point at which extensivedamage has already occurred such that investment in and operation of the system

become nancial burden rather than method of reducing losses. Since the symptoms of disease are likely to be initially localized

in one or few individuals, storage facilities with severaltons of produce likely require multiple sampling points; the precise strategy implementedis

dependent on quantities stored, epidemiological features of the pathogen, and air circula- 5 Alvo et al. Table 1 Studies on Volatiles of Selected Aromatic Herbs and Spices Herb or spice References Angelica 1 Apple owers 1 Rooibos tea 1Basil 1Cardamom 2Caucus 2Ceratolia ericoides 2 Cloves 2 Coriander 2,2 Dill 3Garlic 3,3 Ginger 3 Honeysuckle 3,3,3Mate(Ilex paraguayensis ) 4,4 Juniper berries 4 Lovage 3 Pepper ( Piper nigrum )4 7 Rice foliage 4Rosemary 4Tabasco peppers 5 Vetiver 5 tion needs. Thus, the implementation problem concerns the relationships among rates of release of volatiles, infectivity of the pathogen, airow rates and circulation patterns, anddetection limits for specic compounds. Research concerning the characterization of volatiles of various commodities is ex- tensive and dates back to the turn of the 2th century. Although the important role thatthe earlier works have had in laying the foundations for the many applications of volatilemonitoring is recognized, comprehensive review is far beyond the scope of this chapter.We have therefore chosen to provide lists of earlier references pertaining to specic groupsof commodities in Tables 1 to 6 (. Many of the listed references relate to identi- cation of volatiles from fresh or dry material, in an effort either to elucidate biochemical pathways in general or to determine the factors involved in the avor and aroma character-istics of commodities in particular and