Sifat Fisikokimia Zat Pewarna dari Bunga Eceng Gondok (Eichhornia crassipes) yang Diekstrak dengan Metode Microwave Asissted Extraction (MAE)

Abstract

Syafutri et al, 2019. Physicochemical Properties of Colorant from Water Hyacinth Flower (Eichhornia crassipes) Extracted by Microwave Assisted Extraction (MAE) Method. JLSO 8(1):94-106.The objective of this research was to determine the effect of oven microwave power and extraction time on color intensity, anthocyanin stability, and antioxidant activity of colorant from water hyacinth flower (Eichhornia crassipes) extracted by microwave assisted extraction (MAE) method. The research was conducted at Agricultural Product Chemical Laboratory, Agricultural Technology Department, Faculty of Agriculture, Sriwijaya University. The experiment used a Factorial Completely Randomized Design with two factors and each treatment was repeated three times. The first factor was oven microwave power (100 watts and 300 watts) and the second factor was extraction time in oven microwave (1 minute, 2 minutes, and 3 minutes). The parameters were color intensity, anthocyanin stability, and antioxidant activity. The results showed that the oven microwave power and extraction time had significant effects on color intensity and antioxidant activity. The increasing of oven microwave power and extraction time increased a* value and antioxidant activity, and decreased b* value, significantly. The result also showed that the anthocyanin compounds was not stable with heating up to 105°C.

Optimization of Red Ginger (Zingiber officinale var. Rubrum) Extraction Using Microwave Assisted Hydrodistillation Method

“…This indicates that the essential oil yield obtained from the MAE pretreatment process is more effective than without the MAE pretreatment. This statement is supported by Syafutri et al (2019) that microwave radiation can help accelerate extraction through efficient and rapid solvent heating.…”

Pengaruh Waktu dan Daya Microwave pada Metode Microwave Assisted Extraction (MAE)Terhadap Aktivitas Antioksidan dan Pigmen Ekstrak Daun Ubi kayu (Manihot Utilissima Pohl.)

“…Ekstraksi secara umum merupakan suatu proses pemisahan zat dari suatu padatan maupun cairan dengan menggunakan bantuan pelarut. Metode ekstraksi yang kerap digunakan diantaranya perebusan, refluks, soxhletasi, maserasi, perkolasi dan microwave assisted extraction (Syafutri, 2019).…”