The aim of this work was to e I aborate an approp r iate method of preserving mushrooms for further processing and to extend the I ist of mushroom products. A combined processing method is developed for TJL.i..chotoma equ.e6.tlte., a fungus which appeares in Pol i sh forests in autumn in large amounts. This method consists o f f r eezing the mush r ooms of ed i ble quality classified previously after pre I iminar y treatme. nt Into two parts: one of high quality and equa 1 qua I i ty and equa I dimension for marketing as frozen mush r oom, and the other for successive processing in the post seasone!l Time . The y I e I d and qua I i ty of t he products obtai ned, as dependent on the qua I i ty of a raw materia 1 and mode of techno I og i ca I treatment, was investigated . Genera I I y, in this process the y i eld of frozen mushrooms of TILicholoma. equ e.6tlte makes up about 60% of the raw material of edible quality, and the remaining 40% can be processed further into concentrates and pastes.

Quantitative amino acid composition of acid hydrolysates was determined for samples of some Polish varieties of cereal grain (wheat, rye, barley, oats, millet and buckwheat) and oilseed (rapeseed, sunflower, poppy and soybean). Comparison of investigated genera was done.

As the result of sensory and gas chromatographic investigation of the edible mushrooms Xerocomus badius and Tricholoma equestre aroma properties it was stated that freezing preserves the general character of typical aroma. The observed changes were mostly favourable for sensory value intensifying the characteristic for investigated species small and, in the case of T. equestre, lowering the threshold concentration.

No abstract

Mushroom juice concentrates are refined products, attractive to consumers for their high organoleptic value to be used as an additive to different products and dishes and in the preparation of soups and sauces. In this investigation Tltlc.ho.toma. e.qu.u.t'le.., Cantha1tel.l.u6 ci.b~, RU6ilu.ltr a.l.u.ta.c.ea. and Aluni...Lttvti.ei..!a me.Uea, growing In Pol ish forests were used for concentrate production.