Pine Bark Proanthocyanidin Extraction Standardization
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Solution Overview
Problem
There is no established standardized method for extracting proanthocyanidins from the pine bark of Pinus roxburghii, which hinders the efficient use of this abundant natural resource for nutraceuticals and health supplements, lacking clinical applications such as antioxidants, anti-inflammatory properties, and health benefits like enhanced endurance and cognitive function.
Innovation Solution
A hydroalcoholic extraction method involving pulverization, multiple ethanol treatments, filtration, and spray drying is developed to obtain a standardized pine bark extract (Pinorox®) with a proanthocyanidins content of ≥80% as determined by HPLC, utilizing 80% ethanol and Reverse Osmosis water in a jacketed rotary extractor, followed by distillation and spray drying to produce a sterilized extract.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional extraction methods are used for proanthocyanidins from Pinus roxburghii bark, then extraction can be performed, but there is no standardized method established leading to inconsistent quality and purity
Solution Approach 1:
The patent establishes standardized extraction parameters including specific solvent composition (80% ethanol), temperature (70-80°C), extraction time (100-140 minutes), and solid-liquid ratio (1:4) to achieve consistent proanthocyanidins extraction with ≥80% purity across multiple batches, resolving the lack of manufacturing precision and quality reliability
Solution Approach 2:
The patent implements quality control through HPLC analysis to measure proanthocyanidins content and adjusts extraction parameters based on feedback from analytical results, ensuring standardized extraction process and consistent product quality meeting the ≥80% purity specification
2Manufacturing precision
If multiple extraction steps are performed to increase proanthocyanidins purity, then extraction yield improves, but processing time and complexity increase
Solution Approach 1:
The patent performs preliminary pulverization and sieving of pine bark to optimize surface area and particle size before extraction, enabling more efficient single-stage extraction that achieves ≥80% proanthocyanidins purity without requiring multiple sequential extraction steps, thus reducing total processing time
Solution Approach 2:
The patent optimizes extraction parameters including using 80% ethanol as solvent, maintaining temperature at 70-80°C, and extracting for 100-140 minutes with solid-liquid ratio of 1:4, which achieves high purity proanthocyanidins extraction in a single standardized step, balancing purity requirements with time efficiency
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively enhances aerobic and anaerobic performance, increases endurance, and protects against oxidative stress, with the extracted proanthocyanidins demonstrating significant antioxidant properties and safety in human keratinocyte cells, and showing promise in clinical trials for improving physical and athletic performance.
Implementation Method 1
adding the powder 4 times of the 80% ethanol and RO (Reverse Osmosis) water are added in a jacketed rotary extractor at a temperature in the range of 70-80° C.
Implementation Method 2
subjecting the obtained liquor to distillation under vacuum at a temperature in the range of 65-75° C. in a distillation kettle
Implementation Method 3
distillation under vacuum
Implementation Method 4
subjecting the obtained water soluble concentrate to spray drying using a spray drier having inner chamber fixed at a temperature in the range of 185-190° C. and outer chamber fixed at a temperature in the range of 90-105° C.
Implementation Method 5
followed by HPLC analysis for proanthocyanidins content
Data Source
AI summary
A method for synthesis of method of extraction of proanthocyanidins compound from pine bark—of Pinus roxburghii comprising the steps: weighing and pulverizing bark to obtain pulverized powder, adding powder with water in steam jacketed rotary extractor to obtain an extract A, adding the residue in the extractor to obtain extract B, processing the second residue to obtain a third residue and an extract C which is further processed to obtain a third residue and extract D, mixing A, B, C, D extract to obtain liquor, subjecting vacuum concentrate and insoluble concentrate and subjecting to spray drying and vacuum drying respectively, sieving the powder followed by sterilization to obtain the Pine Bark Extract and further subjecting to HPLC analysis for proanthocyanidins content and packing the extract into fiber drums with double polybags for storage.