KR-20260067331-A - Method for Preparing Safty Food Material from Magma Seawater and the Food Material Obtained Thereby

Abstract

A method for manufacturing a food raw material that is safe from volcanic seawater and a food raw material obtained by the method are disclosed.

Inventors

• 김기주
• 강희곤
• 임태준
• 이영규
• 부하정
• 천현제

Assignees

• 재단법인 제주테크노파크

Dates

Publication Date

20260512

Application Date

20251031

Claims (4)

1. A method for producing food raw materials safe from lava seawater, comprising the steps of: (a) preparing raw lava seawater from which impurities have been removed from collected lava seawater; (b) desalinating the raw lava seawater from which impurities have been removed to produce mineral water; and (c) dehydrating the mineral water to produce lava seawater mineral powder.
2. In paragraph 1, The step of preparing raw lava seawater from which impurities of step (a) have been removed is carried out using a filter with a pore diameter of 5㎛ or less, and The desalination in step (b) above is performed so that the final concentration of Na based on the lava seawater mineral powder obtained through the dehydration in step (c) above is 60 mg/kg or less, and A manufacturing method characterized in that the final lava seawater mineral powder obtained through the dehydration of step (c) above contains at least 20 mg/g of Ca and at least 100 mg/g of Mg.
3. Lava seawater mineral powder, a safe food raw material obtained by the manufacturing method of paragraph 1 or 2.
4. In paragraph 3, Lava seawater mineral powder with a No Observed Adverse Effect Level (NOAEL) of 2,000 mg/kg bw/day and an Acceptable Daily Intake (ADI) of 20 mg/kg bw/day based on the results of a 90-day repeated-dose toxicity test.

Description

Method for Preparing Safe Food Material from Magma Seawater and the Food Material Obtained Thereby The present invention relates to a method for producing safe food raw materials from volcanic seawater and to food raw materials obtained by the method. Groundwater in the Jeju region can be divided into freshwater groundwater formed by rainwater seeping into the ground and lava seawater (saline groundwater) created by seawater infiltrating and filtering through basalt layers. Lava seawater is a saline groundwater with unique characteristics that is generated only in Jeju; it is clean and has a constant temperature throughout the year, and it contains a large amount of various minerals not found in ordinary saline groundwater or seawater. A comparison of the major mineral content of ordinary seawater and lava seawater is shown in Table 1 below. From Table 1 above, lava seawater shows similarities to ordinary seawater in terms of salinity, magnesium, calcium, bromine, etc., but shows distinct differences in terms of trace elements such as silica, zinc, and vanadium. In 2010, the 'Drinking Water Management Act' was amended to include saline groundwater in addition to deep sea water as drinking water if it is treated by physical methods to make it suitable for drinking. As a result, lava seawater is currently being used as drinking water after undergoing physical treatments such as desalination. The present invention discloses the results of a safety evaluation of mineral powder obtained through desalination, dehydration, etc., for use as a food ingredient in addition to using volcanic seawater as drinking water, and the acceptable daily intake derived through such safety evaluation. FIG. 1 is an overall process diagram for manufacturing food raw materials safe from lava seawater according to the present invention. Figure 2 is a photograph of mineral powder, a safe food ingredient obtained from lava seawater according to the present invention. The present invention will be explained below with reference to examples and experimental examples. However, the scope of the present invention is not limited to these examples and experimental examples. <Example> Preparation of safe food ingredients from volcanic seawater, component analysis, safety evaluation, and derivation of acceptable daily intake 1. Preparation of food ingredients from volcanic seawater 1.1 Preparation of Lava Seawater Source Water was collected from 130 m underground at the intake well (permit number W200630027) located at 3575, Haengwon-ri, Gujwa-eup, Jeju-si, in the eastern region of Jeju Island, and impurities were removed by filtering with a 5 µm filter (SF-5S-3E-29, Kaiser, Sejong-si, Korea) to prepare raw lava seawater (2,100 L). The filtered raw lava seawater was analyzed to have Ca 400 mg/L, Mg 1,200 mg/L, Na 11,152 mg/L, and an electrical conductivity of 50,000 μS/cm. 1.2 Preparation of Desalinated Lava Seawater Mineral Water The raw lava seawater, from which impurities were filtered using the above 5㎛ filter, was subjected to an electrolysis process using a cation exchange membrane (NEOSEPTA CIMS, ASTOM Corporation, Japan) and an anion exchange membrane (EOSEPTA AMX-SB, ASTOM Corporation, Japan) and applying a voltage of 100V until the electrical conductivity reached 10,000 μS/cm to remove monovalent ions. The obtained desalinated mineral water (1,000L) showed Ca 200 mg/L and Mg 1,100 mg/L. 1.3 Vacuum Concentration Concentration was performed for 2 hours until the volume reached 300L using a vacuum concentrator (KEX-5000E, Korea Bio Solution Co., Ltd., South Korea) under concentration conditions of 0.08 Bar and 55℃. The concentrated mineral water (300L) was found to contain 650 mg/L of Ca and 3,200 mg/L of Mg. 1.4 Freeze-drying and Grinding Freeze-drying was performed using a freeze dryer (LP-300, Ilshin Biobase Co., Ltd., South Korea) under freeze-drying conditions of vacuum level 40 mmHg or less, 72 hours of operation, starting temperature -45℃, and ending temperature 50℃ so that the moisture content was 10% or less, and the obtained freeze-dried material was crushed to obtain lava seawater mineral powder (6±1 kg) with a mesh size of 100 mesh or less. The obtained mineral powder (food raw material) was found to contain Ca 20 mg/g or more, Mg 100 mg/g or more, and Na 60 mg/g or less. The entire manufacturing process diagram above is shown in Fig. 1. 2. Component analysis of manufactured food ingredients, etc. 2.1 Testing Institution The analysis of the components of the lava seawater mineral powder, which is a manufactured food ingredient, was commissioned to the Korea Functional Food Research Institute (Seongnam, Gyeonggi-do) and the Korea Food Science Research Institute (Uiwang, Gyeonggi-do). 2.2 Iconography Analysis of 3 lots of the manufactured food ingredient, lava seawater mineral powder, revealed that it was a "white powder with a unique flavor and no off-flavors or odors." A photograph of the mineral powder from 3 lots is shown in