This study aims to determine how to extract the gelatin from catfish bones by using pineapple peel waste as a soaking material in the pre-treatment stage and examining the physicochemical properties of the gelatin produced. Kampung Patin in Kampar Regency, Riau Province, is one of the catfish cultivations in Indonesia. It is a center for producing catfish that produces fish bone waste. In this study, gelatin extraction will be undertaken in several stages: the preparation of pineapple waste liquid extract and gelatin extraction (pre-treatment and main extraction stages). Catfish bones will be soaked in 1:5 (m/v) pineapple waste liquid at the pre-treatment stage for 24 hours. While in the central extraction, ossein will be immersed in water at a temperature of 750C for 5 hours. The analysis results for physicochemical characteristics of gelatin obtained include yield of 2.55, pH of 4.58, water content; 11.66%, ash content; 17.71%, crude fat content; 0.17%, protein content; 64.71%. It can be inferred that it meets the established gelatin quality standards from various physicochemical characteristics of gelatin in this study.

Chia seeds (Salvia hispanica L.) are becoming a trend for consumption by employees of the Health Ministry Polytechnic of Riau. This support by many studies on the benefits of consuming these seeds for a diet to lose weight or maintain ideal body weight. Several studies also reported that Chia seeds lower and maintain blood cholesterol levels. This study was to see the effect of giving Chia seeds on the body weight of pregnant mice. This research use laboratory experimental methods, which is analogous to the condition of pregnant women on mice. Chia seeds are administrating into three groups of 4 g; 8 g; 16 g and compared to one control group. The administration starts on the 6th to 15th day of pregnancy. Bodyweights measured at the beginning of pregnancy until before parturition. The results showed that giving Chia seeds did not affect the weight gain of pregnant mice (P>0.05). So from this study concluded that giving Chia seeds does not affect body weight in pregnant mice.