the fibrous structure is preferably part of an absorbent product for use in absorbing fluids such as washing fluids body fluids and the like examples include paper and paper products tissues and the like especially for use in hygiene products such as such as kitchen rolls facial tissues bathroom towels sanitary napkins and diapers the encapsulating agent these are products that are capable of complexing or encapsulating molecules of interest such as biologically active agents drugs biocides attractants repellants diagnostic agents regulators etc odours fragrances and the like for the purpose of absorption or slow release these primarily include cyclodextrins i e cyclooligomers of anhydroglucose units agu having at least 6 agu u03b1 cyclodextrin preferably 7 agu u03b2 cyclodextrin possibly 8 u03b3 cyclodextrin or more agu u03b4 and higher cyclodextrins furthermore acyclic analogues having complexing and or encapsulating capacities such as helical oligoglucoses u03b1 1 4 dextrins or u03b2 1 3 can also be coupled and used according to the invention the encapsulating agents especially cyclodextrins are used in ionic form in this context oligo means having up to 20 recurrent units the cyclodextrins and analogues may be unmodified or modified e g by acylation alkylation hydroxyalkylation etc apart from any modification that would be necessary in the coupling process as detailed below the encapsulating agents are referred to below as cyclodextrins cd for the sake of simplicity but it should understood that the analogous agents as described here are always covered as well unless they are explicitly excluded ionic coupling ionic coupling of cd to fibrous carriers can be effected by applying an electronic charge on the carrier and by applying the opposite charge to the cd for example the carrier can be negatively charged anionic derivatisation by carboxyalkylation sulphonation phosphorylation and the like using chloroacetic acid chloroethanesulphonic.