A hydrated, nonwoven nanocellulose sheet and method for manufacturing the nanocellulose sheet are disclosed. The method of manufacture comprises the steps of diluting a purified nanocellulose slurry to form a colloidal nanocellulose suspension, dispersing pure nanocellulose crystals into the nanocellulose suspension in a nanocellulose crystal to total nanocellulose ratio less than 50% weight per weight (w/w), placing the suspension over a filter sheet in a dispensing device, and forming the hydrated, nonwoven nanocellulose sheet by filtering with a pressure difference across the filter sheet, via a high pressure or vacuum filtration process. The hydrated, nonwoven nanocellulose sheet thus manufactured has high conformability, drape-ability, good adhesion to the skin, and a high rate of evaporation, making it ideal for dermatological treatments.

In a first aspect, the present invention relates to an isolated aqueous enzymatic preparation obtained from the reaction of at least one oxidoreductase enzyme, preferably a laccase, and at least one natural or synthetic product, preferably a natural compound, said natural or synthetic product comprising, in the structure thereof, at least one phenol or alcohol group, which optionally has one or more hydrophobic chains, or at least one sterol group. In a second aspect, the present invention relates to the use of said isolated aqueous enzymatic preparation in the functionalization of the surface of paper or cellulosic substrates.

In a first aspect, the present invention relates to an isolated aqueous enzymatic preparation obtained from the reaction of at least one oxidoreductase enzyme, preferably a laccase, and at least one natural or synthetic product, preferably a natural compound, said natural or synthetic product comprising, in the structure thereof, at least one phenol or alcohol group, which optionally has one or more hydrophobic chains, or at least one sterol group. In a second aspect, the present invention relates to the use of said isolated aqueous enzymatic preparation in the functionalization of the surface of paper or cellulosic substrates.

Zinc or copper (II) salt which can be used as a biocide, having the general formula CH.sub.2C(R.sup.1)COMOCOR.sup.2(OH).sub.m(COOH).sub.n wherein M is Zn or Cu, R.sup.1 is selected from the group comprising hydrogen and methyl, R.sup.2 is substituted C.sub.1-C.sub.5 alkyl, m=0-5, n=0-2, m+n=1-5.

Zinc or copper (II) salt which can be used as a biocide, having the general formula CH.sub.2C(R.sup.1)COMOCOR.sup.2(OH).sub.m(COOH).sub.n wherein M is Zn or Cu, R.sup.1 is selected from the group comprising hydrogen and methyl, R.sup.2 is substituted C.sub.1-C.sub.5 alkyl, m=0-5, n=0-2, m+n=1-5.

Water-free compositions suitable for application as a surface size to a cellulosic substrate, and methods of applying the water-free compositions to the surface of a cellulosic substrate.

Water-free compositions suitable for application as a surface size to a cellulosic substrate, and methods of applying the water-free compositions to the surface of a cellulosic substrate.

The present disclosure discloses a method for preparing a green slow-release preservative paper used for fruit and vegetable preservation. The method includes: step 1, preparing a core paper loaded with biological preservative; step 2, preparing a base membrane loaded with fruit and vegetable respiration inhibitor; and step 3, heating and pressing the core paper loaded with biological preservative and the base membrane loaded with fruit and vegetable respiration inhibitor to obtain the green slow-release preservative paper. The present disclosure uses a biological preservative as a main material and an absorbent paper or a non-woven fabric as an auxiliary material to prepare the green slow-release preservative paper used for fruit and vegetable preservation through a layer-by-layer film covering method.

The present disclosure discloses a method for preparing a green slow-release preservative paper used for fruit and vegetable preservation. The method includes: step 1, preparing a core paper loaded with biological preservative; step 2, preparing a base membrane loaded with fruit and vegetable respiration inhibitor; and step 3, heating and pressing the core paper loaded with biological preservative and the base membrane loaded with fruit and vegetable respiration inhibitor to obtain the green slow-release preservative paper. The present disclosure uses a biological preservative as a main material and an absorbent paper or a non-woven fabric as an auxiliary material to prepare the green slow-release preservative paper used for fruit and vegetable preservation through a layer-by-layer film covering method.

This disclosure provides methods that render hydrophobic carbon fiber paper (CFP) hydrophilic for extended periods without damaging the carbon fibers that compose the CFP or the architecture of the network of those carbon fibers. The disclosure further provides hydrophilic CFP made by the inventive methods. The methods include sonicating the CFP in an aqueous surfactant solution followed by electrooxidizing the CFP in an aqueous electrolyte.