The article presents the dry matter yield experimental studies results in the subcritical water grape pomace extraction of. Extraction was performed under a temperature range of T 100°C ÷ 160°C, pressure P = 12 MPa, exposure of 30 to 90 min and hydronic modules 1:5 and 1:10. High output common extractives were observed already at 100°C and 0.5 h (31.9 % at hydro module 1:5 and 39.4 % at hydronic module 1:10). The results showed that extraction with subcritical water of a dry extract yield at least 2 times greater than the sweet pomace by washing with hot water. Subcritical water extraction at 160°C for conversion of plant material is comparable to wood acid hydrolysis. However, compared with a catalytic hydrolysis sulfuric acid unnecessary neutralization of with the illiquid formation, hard recyclables departing - gypsum contaminated with organic compounds.