Patent ID: 11864561
Assignee: THANH DUC LE
Field: Basic materials chemistry (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 3:
4. The multipurpose fertilizer composition of claim 1, wherein the pectin extract from okra (Abelmoschus esculentus (L.) Moench) created by performed in a specific order from (i″) to (v″) comprising:
(i″) cutting okra (Abelmoschus esculentus (L.) Moench) into thin slices 1-5 mm thick, then admixing with water in the ratio 1:1 to create a okra mixture;
(ii″) adjusting the pH of the okra mixture to 5.5, then adding 0.1% pectinase enzyme, and incubating at 45° C. for 30 minutes;
(iii″) filtering said the incubated okra mixture to obtain a okra residue, and a first temporary filtrate;
(iv″) hydrolyzing 1 part of first temporary filtrate with 8 parts of HNO3 acid including two stages:
stage 1: soaking 1 part of the okra residue with 5 parts of HNO3 acid at 60° C. for minutes, with the combination of stirring, and maintain pH at 1.5;
stage 2: adding 3 parts of HNO3 acid for continue soaking at 30° C. for 30 minutes, with the combination of stirring, and maintain pH at 2, then filtering to obtain a second temporary filtrate, and the pectin-reduced okra residue; and
(v″) centrifuging a mixture of the first temporary filtrate at step (iii″) and the second temporary filtrate at step (iv″) with 3000-3500 rpm for 15 minutes to create the pectin extract from okra.