An Assay To Estimate Tannins Added to Postmortem Turkey Meat

Lau, Doris W.; King, Arthur S.; Waterhouse, Andrew L.

doi:10.1021/jf030121t

Cited by 5 publications

(3 citation statements)

References 34 publications

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“…Ellagitannins and gallotannins may also affect the life of foodstuff due to their antioxidant properties and/or antimicrobial activity (Cao, Sofic, & Prior, 1997;Hager, Howard, & Prior, 2010;Haslam, 1989;Koponen, Happonen, Mattila, & Törrönen, 2007;Lau, King, & Waterhouse, 2003;Michel et al, 2011;Zhang, Wang, Lee, Henning, & Heber, 2009). …”

Section: Importance Of Food Htsmentioning

confidence: 99%

Hydrolyzable tannin analysis in food

2012

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Section: Importance Of Food Htsmentioning

confidence: 99%

Hydrolyzable tannin analysis in food

2012

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“…Hydrolysable tannins are heterogeneous groups of natural polyphenolic compounds, with high molecular weight, are water-soluble, and widely found in vegetable feedstuffs and can be extracted from the wood of trees [5]. In monogastric animals, HT have positive effects on the stability of the gastrointestinal microflora and potential antioxidant properties [6]. Previous studies showed that tannins possessed antibacterial, antioxidant, antidiarrheal, and anticancerogenic activities in weaned pigs [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of Hydrolysable Tannins as Zinc Oxide Substitutes on Antioxidant Status, Immune Function, Intestinal Morphology, and Digestive Enzyme Activities in Weaned Piglets

Liu

Mahfuz

2020

Animals

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Zinc oxide (ZnO) has negative environmental effects and bioavailability in weaned piglets. Thus, finding safe and effective ZnO substitutes to improve intestinal health and to prevent diarrhea of weaned piglets is urgently required. Therefore, this experiment was conducted to evaluate the effects of hydrolysable tannins (HT), ZnO and HT versus ZnO on growth performance, antioxidant status, serum immunity, intestinal morphology, and digestive enzyme activities in weaned pigs. A total of 144 piglets (28 d-old, initial body weight 7.81 ± 0.99 kg) were assigned to 4 treatments with 6 replicates of 6 piglets each. The experiment lasted 28 d (d 1 to 14 as for phase 1 and d 15 to 28 as for phase 2). The dietary treatments include a corn-soybean meal basal diet (CON); ZnO diet (CON + 2000 mg/kg ZnO in phase 1 and 137.5 mg/kg ZnO in phase 2); HT diet (CON + 1000 mg/kg HT in the overall period (d 1 to 28); HT + ZnO diet (CON + 2000 mg/kg ZnO + 1000 mg/kg HT in phase 1, and 137.5 mg/kg ZnO + 1000 mg/kg HT in phase 2). In phase 1, the incidence of diarrhea was lower (p < 0.05) in the HT + ZnO group than CON. Serum catalase (CAT) and glutathione peroxidase (GSH-Px) were increased (p < 0.01) and malondialdehyde (MDA) was decreased (p < 0.01) in the HT + ZnO group than CON. Compared with CON, immunoglobulin M (IgM), immunoglobulin A (IgA) were increased (p < 0.05) in the HT + ZnO group. In phase 2, both HT and HT + ZnO had a trend to improve (p < 0.10) daily gain. The concentration of total antioxidant capacity (T-AOC) and IgM in serum was higher (p < 0.01) in HT compared with CON. Supplementation of HT improved (p < 0.01) GSH-Px activities in ileum mucosa than the ZnO group. Compared with CON, trypsin, lipase activities, and villus height of jejunum were improved (p < 0.05) in HT and HT + ZnO. The ratio of villus height to crypt depth in the jejunum was improved (p < 0.05) in the HT + ZnO group and which also was increased (p < 0.05) in ileum in the HT group compared with CON. Propionic acid, butyric acid, and acetic acid concentrations in the colon were increased (p < 0.05) in the HT group than CON. Overall, HT + ZnO treatments could be used to replace ZnO for reducing diarrhea and improving antioxidant capacity, immunity, and digestive enzyme activities in weaned piglets.

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“…These stressors result in low feed intake as well as changes in gut morphology and microbiota, which affect productive performance and increase susceptibility to diseases. The multiple functions of tannin polyphenols also have positive effects on gut microbiota (LAU et al, 2003), gut health and animal performance (BRUS et al, 2013), reducing postweaning diarrhoea (LIU et al, 2020), and stress blood metabolites (CAPRARULO et al, 2020), which can revert weaning effects (HUSSAIN et al, 2021), thereby improving animal production and welfare.…”

Section: Introductionmentioning

confidence: 99%

Black wattle (Acacia mearnsii) condensed tannin extract as feed additive in diets of weaned piglets

Schneider,

Borba,

Medeiros

et al. 2024

Cienc. Rural

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This study evaluated the effect of black wattle (Acacia mearnsii) condensed tannin extract in simple and complex diets for weaned piglets on performance, faecal consistency and serum haptoglobin concentrations. Eighty-eight female and castrated male piglets were used, weaned at 28 ± 3 days old, with an initial body weight of 8.02 ± 1.21 kg, housed in same-sex pairs and distributed in four treatments in a 2 x 2 factorial experiment in a randomised complete block design. The experimental treatments were simple diet (SD), simple diet + tannin (SD+T), complex diet (CD) and complex diet + tannin (CD+T). The simple diets contained lower concentrations of dairy ingredients, inclusion of barley and no addition of zinc oxide, palatant, acidifier and yeast. The diets with tannin were supplemented with 1,850 mg kg-1 of black wattle condensed tannin extract. The feed programme consisted of three diets: Pre-starter I (0-7 days), Pre-starter II (8-21 days) and Starter (22-28 days). Feed and water were available ad libitum. Body weight and feed intake were measured weekly to calculate the average daily feed intake, daily weight gain and feed conversion ratio. The faecal consistency score was measured daily to calculate the diarrhoea occurrence percentage. Blood samples for serum haptoglobin concentration were collected at 7 and 14 days after weaning. The addition of condensed tannin had no effect (P > 0.05) on evaluated performance variables for weaned piglets. The diet type also did not affect the piglets’ performance (P > 0.05). The inclusion of black wattle (Acacia mearnsii) condensed tannin does not affect piglet performance, reduces the incidence of diarrhoea in the first week after weaning and decreases the haptoglobin inflammatory response.

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An Assay To Estimate Tannins Added to Postmortem Turkey Meat

Cited by 5 publications

References 34 publications

Hydrolyzable tannin analysis in food

Hydrolyzable tannin analysis in food

Effects of Hydrolysable Tannins as Zinc Oxide Substitutes on Antioxidant Status, Immune Function, Intestinal Morphology, and Digestive Enzyme Activities in Weaned Piglets

Black wattle (Acacia mearnsii) condensed tannin extract as feed additive in diets of weaned piglets

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