ETO sterilization for spice

There are three types of sterilization for spice(環氧乙烷滅菌 )(EtO, gamma, steam) :

with eo gas(eto sterilization)– spices treated with ethylene oxide (EtO) ,

with irradiation– spices treated with radiation (e.g. gamma rays, x-rays),
with steam(high temperature,and water steam).

advantage-and-disadvantage-between-eto-sterilization-irradiation-and-steam-in-spice-sterilization

1. Ethylene oxide sterilization (ETO)exposes the product to ETO gas under controlled conditions in a sealed chamber, to kill bacteria in the product.

優點：呢個係一種性價比高，廣泛使用嘅殺菌方法，已經常見咗好多年，當你買咗部機，你可以自己殺菌，而且成本好平。體積大（1-36托盤）（大約1-35噸香料一次，視乎香料嘅密度）
缺點： ETO 係一種受到嚴格管制嘅氣體。而且會比其他兩種殺菌方法花多啲時間（你可以安裝預熱室同通風室嚟解決呢個問題）。

2. Irradiation exposes the product to gamma rays or electron beam radiation to sterilize it.
advantage: Most effective method and no chemicals are used in this process
Disadvantages: expensive price, will cause damage to the package, and public pressure due to the negative connotations of radiation has resulted in specific labeling requirements to disclose that the product is irradiated. That can be unappealing to consumers.

3. Steam sterilization is a process that uses hot steam in a controlled environment to heat the product.
advantage: No chemicals or radiation are used in this process.
disadvantage: high temperature, and if any moisture is introduced to the product, it can result in caking and molding, and change the color and flavor of spice.