Glycemic index of cereals and tubers produced in China.

Aim: To determine the GI of some cereals and tubers produced in China in an effort to establish the database of glycemic index (GI) of Chinese food.

Methods: Food containing 50 g carbohydrate was consumed by 8-12 healthy adults after they have been fasted for 10 h and blood glucose was monitored for 2 h. Glucose was used as reference food.

[Optical oxygen sensor based on a sol-gel encapsulation method].

Objective: To develop oxygen sensor by use of sol-gel encapsulation method and optical fiber technology. Method Organically modified sol-gel film was prepared by hydrolyzing tetraethoxysilane (TEOS) and methyltriethoxysilane (MTEOS) together, and film-processing conditions were optimized. Overall validation of the method was carried out by building Stern-Volmer plots and determining the concentration of oxygen in samples.