PATENT CLAIM ANALYSIS

Application Number: 15870966
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-05
Patent Classification: ["536", "128000"]

Abstract:
The present invention provides a method for extracting  Tremella  polysaccharides by using buffer solution, which comprises the following steps: leaching  Tremella  powder in a buffer solution with heating to obtain the leachate; subjecting the said leachate to solid-liquid separation and obtaining the liquid component which contains  Tremella  polysaccharides; subjecting the said liquid component to alcohol precipitation, and the precipitate obtained is  Tremella  polysaccharides. According to the method of the invention, various buffer solutions can achieve the extraction rates of  Tremella  polysaccharides up to 33:12%, which is 3 to 4 times of that of the traditional water extraction method, and greatly improve the extraction yields of  Tremella  polysaccharides.

Claim (Index 1):
A method for extracting  Tremella  polysaccharides, comprising the following steps:\n 1) under the condition of heating, obtaining a leachate by leaching  Tremella  powder with a buffer solution comprising no organic solvent, wherein the temperature is kept at 70-100\u00b0 C., and the heating time is 2-6 h; 2) subjecting the leachate to solid-liquid separation to obtain a liquid component; and 3) obtaining the  Tremella  polysaccharides by alcohol-precipitating and centrifuging the liquid component, wherein the buffer solution is selected from a group consisting of citric acid-sodium citrate buffer solution having a concentration of 0.1 mol/L citric acid and sodium citrate, respectively, and pH of 3.0 to 6.6; acetic acid\u2014sodium acetate buffer solution having a concentration of 0.2 mol/L citric acid and sodium citrate, respectively, and pH of 3.6 to 5.8; and sodium carbonate buffer solution having a concentration of 0.1 mol/L sodium carbonate and sodium hydrogen carbonate, respectively, and pH of 8.6 to 10.6.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 86.0
- Lexical Diversity: 1.81538
- Patent Class: 536.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14355535', '14355531', '14400076', '13179793', '15123655']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.592905237539803
- 35 USC 102 Novelty (BERT): 0.4931859153611803
- Combined Prediction Score: 0.5829333053219408
- Mean Citation Score: 180.32883
- Max Citation Score: 200.51448
- Similarity Product: 126.48781048012732

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test