A novel process to separate the eggshell membranes and eggshells via flash evaporation

Abstract

Eggshell membrane is a kind of cheap, abundant resources with great potential utilization value. A variety of active ingredients in it can be used as raw materials for medicine, light industry and other industries. At present, soluble protein, collagen, keratin, sialic acid, hyaluronic acid and antimicrobial protein have been successfully extracted from eggshell membrane and exploited in various fields. This study aimed to separate the eggshell membrane for fully exploiting the potential utilization value of the eggshell, and reduce the amount of waste discharged, which is conducive to protecting the ecological environment on which we depend. In order to reduce energy consumption of eggshell membrane separation, separate eggshell membranes from eggshells by flash evaporation was investigated. The flash separation conditions were optimized considering three independent variables at three different levels by response surface methodology. The results showed that the processing parameters of separating eggshell membranes and eggshells with flash evaporation were 1.0 Mpa pressure, 45% moisture content, and 5 mm eggshells' particle size. Under these conditions, the separation rate was 69.16%. Therefore, flash separation can be a promising approach for separating eggshells and eggshell membranes.

Anti-inflammatory and regenerative effects of MKARE® Eggshell Membrane: an in vitro osteoarthritis model and placebo-controlled clinical study.

“…Results showed that the sample stored at room temperature (ES-RT) has a higher content of free amino groups, indicative of a higher degree of protein hydrolysis. On the other hand, as expected (Chi et al, 2022), the fresh sample (ES-F) has the lowest content of free amino groups (lower degree of hydrolysis). Upon comparing the hydrolysis levels of two samples from the same batch, ES-RT and frozen (ES-Fr), a signi cant increase in the free amino group content was observed in the sample stored at room temperature.…”

Parameter matching and experiment of the combined cyclone separation and cylinder sieve cleaning system for rapeseed combine harvester

“…The rape threshed mixture is composed of rapeseed, pod shells, short stems and light impurities. The suspension velocity of rapeseed, pod shells, short stems and light impurities are 7.4-9.4 m/s, 2.4-3.2 m/s, 6.3-11.2 m/s, and 1.1-3.2 m/s, respectively [26] . There is a crossover interval between the suspension velocity of the short stem and rapeseed.…”

Eggshell Membrane as a Biomaterial for Bone Regeneration

“…A variety of separation methods have been developed for the large-scale industrialized purification of ESM from eggshell [ 80 ] ( Table 2 ). These include microwave-assisted membrane detachment [ 81 ], flash evaporation [ 82 ], and dissolved air flotation [ 83 ]. Microwave-assisted separation consists of a weakening of the physical bonds between membranes and the eggshell.…”

“…Flash evaporation uses a batch reactor that takes advantage of the effect of pressure changes of a saturated liquid to separate the membrane. Chi et al reported a separation rate of ~69% [ 82 ]. Lastly, dissolved air flotation separates the membrane from the shell according to its differential density by applying a water flow and mixed air.…”