FIELD: food industry.
SUBSTANCE: invention relates to food industry, in particular to determination of pectin substances quantity in vegetal raw material. The method envisages drying plaited paper filter until constant weight, preparation of protopectin and hydratopectin, sampling. The protopectin solution acid medium is neutralised with pectin substances fraction in the solutions being analysed saponified with 40% solution of NaOH during 15 minutes. Then pectin substances are sedimented with concentrated HCl and the sediment is filtered. Then the sediments on filters are washed with cold distilled water. Filters with sediments are dried till constant weight and one calculates pectin substances fractions weight percentage from certain formulas.
EFFECT: invention enables enhanced accuracy of determination of pectin substances weight percentage in vegetal raw material, reduction of time and labour expenditures as well as specific equipment usage exclusion.
2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR DETERMINATION OF WEIGHT PERCENTAGE OF PECTIN SUBSTANCES FRACTION IN VEGETAL OBJECTS BY WAY OF CONDUCTOMETRIC TITRATION | 2011 |
|
RU2489899C2 |
| METHOD OF PREPARING PECTIN EXTRACT FOR QUANTITATIVE DETERMINATION OF PECTIN IN VEGETABLE STOCK | 2003 |
|
RU2254342C2 |
| DRIED BEET PULP PECTIN EXTRACT PRODUCTION METHOD | 2013 |
|
RU2546194C1 |
| METHOD FOR DETERMINING CONCENTRATION OF PECTINS | 0 |
|
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|
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| METHOD OF DETERMINING WATER-SOLUBLE EXTRACTIVE SUBSTANCES IN TEA | 2023 |
|
RU2821737C1 |
| METHOD FOR DETERMINATION OF SORPTION CAPACITY OF BREAD CONTAINING PECTIN | 2010 |
|
RU2445618C1 |
| METHOD OF DETERMINING WEIGHT PROPORTION OF FUNCTIONAL GROUPS OF POLYURONIDES | 2001 |
|
RU2206089C1 |
| OIL-MINERAL BLEND PREPARATION METHOD | 2003 |
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RU2238250C1 |
