Benchmarking the minimum Electron Beam (eBeam) dose required for the sterilization of space foods was written by Bhatia, Sohini S.;Wall, Kayley R.;Kerth, Chris R.;Pillai, Suresh D.. And the article was included in Radiation Physics and Chemistry in 2018.Reference of 638-02-8 The following contents are mentioned in the article:
As manned space missions extend in length, the safety, nutrition, acceptability, and shelf life of space foods are of paramount importance to NASA. Since food and mealtimes play a key role in reducing stress and boredom of prolonged missions, the quality of food in terms of appearance, flavor, texture, and aroma can have significant psychol. ramifications on astronaut performance. The FDA, which oversees space foods, currently requires a min. dose of 44 kGy for irradiated space foods. The underlying hypothesis was that com. sterility of space foods could be achieved at a significantly lower dose, and this lowered dose would pos. affect the shelf life of the product. Electron beam processed beef fajitas were used as an example NASA space food to benchmark the min. eBeam dose required for sterility. A 15 kGy dose was able to achieve an approx. 10 log reduction in Shiga-toxin-producing Escherichia coli bacteria, and a 5 log reduction in Clostridium sporogenes spores. Furthermore, accelerated shelf life testing (ASLT) to determine sensory and quality characteristics under various conditions was conducted. Using Multidimensional gas-chromatog.-olfactometry-mass spectrometry (MDGC-O-MS), numerous volatiles were shown to be dependent on the dose applied to the product. Furthermore, concentrations of off -flavor aroma compounds such as di-Me sulfide were decreased at the reduced 15 kGy dose. The results suggest that the combination of conventional cooking combined with eBeam processing (15 kGy) can achieve the safety and shelf-life objectives needed for long duration space-foods. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Reference of 638-02-8).
2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.Reference of 638-02-8
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem