Publications by authors named "Riantong Singanusong"

A spray-dried cholesterol free salad dressing powder was developed using mixed mono- and diglycerides (MG-DG) as emulsifier. The optimum conditions for enzymatic synthesis of the MG-DG from rice bran oil (RBO) and glycerol (Gly) using lipase was investigated. The synthesis was done by glycerolysis of refined RBO and Gly at molar ratios of 2:1, 2.

View Article and Find Full Text PDF

For Thai people, rice is not only regarded as a staple food but a sacred plant with a spirit, a life and a soul of its own. Many exquisite cultural traditions and customs associated with rice and Thai people are usually performed nationwide from sowing to harvesting such as the Royal Ploughing Ceremony, Morale Blessing Ceremony to Phosop. During the 2007-2016 period, while the planted area (72,217,000 rai), harvested area (68,332,000 rai), production (32,874,000 ton) and yield (480 kg/rai) varied slightly, the price (10,232 Baht/ton) and value (337,849 million Baht) at farm gate steadily decreased.

View Article and Find Full Text PDF
Article Synopsis
  • Rice bran oil (RBO), particularly from colored rice, is rich in beneficial phytochemicals and is widely used in food, cosmetics, and health products.
  • The study compared phytochemical content in RBO extracted from Red Jasmine rice, Hom-nin rice, and Khao Dawk Mali 105 rice using three methods: cold-press extraction (CPE), solvent extraction (SE), and supercritical CO extraction (SC-CO).
  • Results indicated that colored rice, especially Hom-nin rice, had the highest concentration of phytochemicals, with CPE yielding the most potent oil compared to the other extraction methods.
View Article and Find Full Text PDF

Mandarin peel is a good source of phenolic compounds, which can be extracted by the ultrasound-assisted extraction (UAE) method. This research was to optimize the UAE conditions for maximum mandarin peel extract (MPE) relating to the extract yield, total phenolic content and the content of a mandarin peel rich flavonoid, hesperidin, using a response surface method comparing with the maceration extraction (MAE) method. The results showed that the selected factors (temperature, time and power) have a significant influence on the extraction yield, total phenolic content and hesperidin content.

View Article and Find Full Text PDF

This study investigated the physicochemical and antioxidant properties of rice bran oil (RBO) produced from the bran of three rice varities; Khao Dawk Mali 105 (white rice), Red Jasmine rice (red rice) and Hom-nin rice (black rice) using three extraction methods including cold-press extraction (CPE), solvent extraction (SE) and supercritical CO extraction (SC-CO). Yields, color, acid value (AV), free fatty acid (FFA), peroxide value (PV), iodine value (IV), total phenolic compound (TPC), γ-oryzanol, α-tocopherol and fatty acid profile were analyzed. It was found that the yields obtained from SE, SC-CO and CPE extractions were 17.

View Article and Find Full Text PDF

Seasonal variations of phenolic compounds in fresh tea shoots grown in Australia were studied using an HPLC method. Three principal tea flavanols [epigallocatechin gallate (EGCG), epicatechin gallate (ECG), and epigallocatechin (EGC)] and four grouped phenolics [total catechins (Cs), total catechin gallates (CGs), total flavanols (Fla), and total polyphenols (PPs)] in fresh tea shoots were analyzed and compared during the commercial harvest seasons from April 2000 to May 2001. The levels of EGCG, ECG, and CGs in the fresh tea shoots were higher in the warm months of April 2000 (120.

View Article and Find Full Text PDF

Flavonoids of nine Australian monofloral Eucalyptus honeys have been analyzed and related to their botanical origins. The mean content of total flavonoids varied from 1.90 mg/100 g of honey for stringybark (E.

View Article and Find Full Text PDF

Changes in composition during the maturation of Western Schley pecans [Carya illinoinensis(Wangenh.) K. Koch] grown in Australia were investigated.

View Article and Find Full Text PDF