The synthesis, half-life and distribution of ascorbic acid in rainbow trout

Feed efficiency, nutrient retention and body composition of Nile tilapia, Oreochromis niloticus L., fed diets containing L-ascorbic acid, L-ascorbyl-2-sulphate or L-ascorbyl-2-polyphosphate

“…In the present experiment, diet analysis for ascorbic acid after processing and storage (at the end of the experiment) showed negligible (almost a complete loss) vitamin C from diets containing AA (Table 2). Similar results for the appreciable or complete loss of dietary vitamin C during processing and during storage have been reported by several investigators (Hilton, Cho, Brown & Slinger 1979;Dabrowska & Dabrowski 1990;Abdelghany 1996). The greater stability of AS or APP compounds compared with the parent AA compound in fish diets has been demonstrated (Tucker & Halver 1984;Soliman, Jauncy & Roberts 1986;Grant et al 1989;El-Naggar & Lovell 1991;Abdelghany 1996).…”

Feed efficiency, nutrient retention and body composition of Nile tilapia, Oreochromis niloticus L., fed diets containing L-ascorbic acid, L-ascorbyl-2-sulphate or L-ascorbyl-2-polyphosphate

“…In the present experiment, diet analysis for ascorbic acid after processing and storage (at the end of the experiment) showed negligible (almost a complete loss) vitamin C from diets containing AA (Table 2). Similar results for the appreciable or complete loss of dietary vitamin C during processing and during storage have been reported by several investigators (Hilton, Cho, Brown & Slinger 1979;Dabrowska & Dabrowski 1990;Abdelghany 1996). The greater stability of AS or APP compounds compared with the parent AA compound in fish diets has been demonstrated (Tucker & Halver 1984;Soliman, Jauncy & Roberts 1986;Grant et al 1989;El-Naggar & Lovell 1991;Abdelghany 1996).…”

Effects of native medicinal herbs (Alternanthera sessilis,Eclipta albaandCissus quadrangularis) on growth performance, digestive enzymes and biochemical constituents of the monsoon river prawnMacrobrachium malcolmsonii

“…Vitamin C (Ascorbic acid) is involved in the biosynthesis of steroid hormones (Hilton et al . ) and collagen (Hunter et al . ; Lightner et al .…”

Growth Response of Nile Tilapia Oreochromis niloticus to Dietary L‐Ascorbic Acid, L‐Ascorbyl‐2‐Sulfate, and L‐Ascorbyl‐2‐Polyphosphate

“…Although it is known that L-ascorbic acid is labile and easily oxidized to an inactive form, it was surprising that L-ascorbic acid lost its effectiveness in the diets during diet preparation and during the storage conditions (-20 C) over the 12-wk experimental period. Hilton et al (1979) reported that the half-life of ascorbic acid in pelleted trout food was 14-35 d. Dabrowska and Dabrowski (1990) found that losses of L-ascorbic acid could be as high as 90% in a casein-gelatin diet processed at room temperature.…”

Feed efficiency, nutrient retention and body composition of Nile tilapia, Oreochromis niloticus L., fed diets containing L-ascorbic acid, L-ascorbyl-2-sulphate or L-ascorbyl-2-polyphosphate

“…In the present experiment, diet analysis for ascorbic acid after processing and storage (at the end of the experiment) showed negligible (almost a complete loss) vitamin C from diets containing AA (Table 2). Similar results for the appreciable or complete loss of dietary vitamin C during processing and during storage have been reported by several investigators (Hilton, Cho, Brown & Slinger 1979;Dabrowska & Dabrowski 1990;Abdelghany 1996). The greater stability of AS or APP compounds compared with the parent AA compound in fish diets has been demonstrated (Tucker & Halver 1984;Soliman, Jauncy & Roberts 1986;Grant et al 1989;El-Naggar & Lovell 1991;Abdelghany 1996).…”

Effects of native medicinal herbs (Alternanthera sessilis,Eclipta albaandCissus quadrangularis) on growth performance, digestive enzymes and biochemical constituents of the monsoon river prawnMacrobrachium malcolmsonii

“…Vitamin C (Ascorbic acid) is involved in the biosynthesis of steroid hormones (Hilton et al . ) and collagen (Hunter et al . ; Lightner et al .…”

Growth Response of Nile Tilapia Oreochromis niloticus to Dietary L‐Ascorbic Acid, L‐Ascorbyl‐2‐Sulfate, and L‐Ascorbyl‐2‐Polyphosphate

“…Although it is known that L-ascorbic acid is labile and easily oxidized to an inactive form, it was surprising that L-ascorbic acid lost its effectiveness in the diets during diet preparation and during the storage conditions (-20 C) over the 12-wk experimental period. Hilton et al (1979) reported that the half-life of ascorbic acid in pelleted trout food was 14-35 d. Dabrowska and Dabrowski (1990) found that losses of L-ascorbic acid could be as high as 90% in a casein-gelatin diet processed at room temperature.…”

Feed efficiency, nutrient retention and body composition of Nile tilapia, Oreochromis niloticus L., fed diets containing L-ascorbic acid, L-ascorbyl-2-sulphate or L-ascorbyl-2-polyphosphate

“…In the present experiment, diet analysis for ascorbic acid after processing and storage (at the end of the experiment) showed negligible (almost a complete loss) vitamin C from diets containing AA (Table 2). Similar results for the appreciable or complete loss of dietary vitamin C during processing and during storage have been reported by several investigators (Hilton, Cho, Brown & Slinger 1979;Dabrowska & Dabrowski 1990;Abdelghany 1996). The greater stability of AS or APP compounds compared with the parent AA compound in fish diets has been demonstrated (Tucker & Halver 1984;Soliman, Jauncy & Roberts 1986;Grant et al 1989;El-Naggar & Lovell 1991;Abdelghany 1996).…”

Effects of native medicinal herbs (Alternanthera sessilis,Eclipta albaandCissus quadrangularis) on growth performance, digestive enzymes and biochemical constituents of the monsoon river prawnMacrobrachium malcolmsonii

“…Vitamin C (Ascorbic acid) is involved in the biosynthesis of steroid hormones (Hilton et al . ) and collagen (Hunter et al . ; Lightner et al .…”

Growth Response of Nile Tilapia Oreochromis niloticus to Dietary L‐Ascorbic Acid, L‐Ascorbyl‐2‐Sulfate, and L‐Ascorbyl‐2‐Polyphosphate

“…Although it is known that L-ascorbic acid is labile and easily oxidized to an inactive form, it was surprising that L-ascorbic acid lost its effectiveness in the diets during diet preparation and during the storage conditions (-20 C) over the 12-wk experimental period. Hilton et al (1979) reported that the half-life of ascorbic acid in pelleted trout food was 14-35 d. Dabrowska and Dabrowski (1990) found that losses of L-ascorbic acid could be as high as 90% in a casein-gelatin diet processed at room temperature.…”