# US 12,006,270 B2 · Fertilizers derived from date syrup

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- Number: US 12,006,270 B2
- Document ID: US12006270B2
- Status: Granted
- Kind: B2
- Application number: 17/164,370
- Filed: 2021-02-01
- Published: 2021-11-25
- Granted: 2024-06-11
- Earliest claimed: 2020-05-23
- Assignees: King Saud University
- Applicants: King Saud University
- Inventors: Ahmed Bari; Suleiman Binabdulaziz Aljarboa; Saeed Ali Syed
- Web page: https://patentgrep.com/patent/US12006270B2

## CPC

- C05F 11/10: Fertilisers containing plant vitamins or hormones
- C05D 9/02: containing trace elements
- C05G 1/00: Mixtures of fertilisers belonging individually to different subclasses of C05
- C05F: ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05D: INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05G: MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS (organic fertilisers containing added bacterial cultures, mycelia, or the like C05F11/08; organic fertilisers containing plant vitamins or hormones C05F11/10); FERTILISERS CHARACTERISED BY THEIR FORM

## Abstract

The fertilizers derived from date syrup may include date sugar acids chelated to at least one metal ion useful for promoting plant growth. The date acids may be synthesized from waste or non-consumable dates. The fertilizers derived from date syrup may be synthesized by extracting date syrup from dried dates, oxidizing the date syrup to obtain date acids, and chelating the date acids to at least one metal ion. The at least one metal ion may be selected from the group consisting of potassium, calcium, magnesium, copper, iron, manganese, molybdenum, zinc, and a combination thereof.

## Claims

### Claim 1

A fertilizer composition derived from date syrup consisting of:
acetic acid;
water;
a chemical compound selected from the group consisting of potassium carbonate and calcium hydroxide;
propylene glycol; and
a mixture of date sugar acids chelated to at least one metal ion, wherein the mixture of date sugar acids includes gluconic acid, glucaric acid, and glucuronic acid.

### Claim 2 (depends on 1)

The fertilizer composition according to claim 1, wherein the at least one metal ion is selected from the group consisting of potassium, calcium, magnesium, copper, iron, manganese, molybdenum, zinc, and a combination thereof.

### Claim 3 (depends on 2)

The fertilizer composition according to claim 2, wherein the at least one metal ion is calcium.

### Claim 4 (depends on 2)

The fertilizer composition according to claim 2, wherein the at least one metal ion is potassium.

### Claim 5 (depends on 1)

A method of fertilizing a plant in need thereof, comprising administering the fertilizer composition of claim 1 to a plant in need thereof.

### Claim 6 (depends on 5)

The method of claim 5, wherein the at least one metal ion is selected from the group consisting of calcium and potassium.