Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS)

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spelling 10549 https://intelek.unisza.edu.my/intelek/pages/view.php?ref=10549 https://intelek.unisza.edu.my/intelek/pages/search.php?search=!collection407072 Restricted Document Conference Conference Paper application/pdf 10 1.6 Adobe Acrobat Pro DC 20 Paper Capture Plug-in Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML like Gecko) Chrome/90.0.4430.85 Safari/537.36 2021-04-28 01:19:59 4586-01-FH03-FBIM-21-52758.pdf UniSZA Private Access Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS) Duck skin is the by-product of duck meat production, and it is a readily available source of gelatin that may serve as an alternative to gelatin made from pigs and cows. In this study, the physicochemical properties of Peking duck skin gelatin were assessed. Duck skin gelatin was extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS). The extraction yield of ALDS (1.95%) was significantly higher than that of ADS (1.33%), and the recovery of protein of ALDS was 46.47% compared to 43.77% for ADS. The bloom value of ADS (364.10 g) was significantly higher than that of ALDS (205.13 g) and commercial type B bovine gelatin (BG, 224.20 g). The high bloom value of ADS and medium bloom value of ALDS mean that they can be used in many food applications. The hydroxyproline content of ADS (13.84 g/100 g) also was significantly higher than that of ALDS (10.25 g/100 g) and BG (12.87 g/100 g). The pH of ADS and BG (5.31 and 4.90, respectively) did not differ significantly, whereas the pH of ALDS was 8.34. Viscosity values of ADS and ADLS were 13.51 and 12.35 mPas, respectively, which were significantly higher than that of BG (3.62 mPas). Overall, these results show that duck skin is a potential raw material for gelatin production, as it has a high bloom value and is readily available in Malaysia. 7th International Conference on Sustainable Agriculture, Food and Energy: Green Agri-food Energy Production for a Better World in a Changing Climate Phuket Rajabhat UniversityPhuket
spellingShingle Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS)
summary Duck skin is the by-product of duck meat production, and it is a readily available source of gelatin that may serve as an alternative to gelatin made from pigs and cows. In this study, the physicochemical properties of Peking duck skin gelatin were assessed. Duck skin gelatin was extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS). The extraction yield of ALDS (1.95%) was significantly higher than that of ADS (1.33%), and the recovery of protein of ALDS was 46.47% compared to 43.77% for ADS. The bloom value of ADS (364.10 g) was significantly higher than that of ALDS (205.13 g) and commercial type B bovine gelatin (BG, 224.20 g). The high bloom value of ADS and medium bloom value of ALDS mean that they can be used in many food applications. The hydroxyproline content of ADS (13.84 g/100 g) also was significantly higher than that of ALDS (10.25 g/100 g) and BG (12.87 g/100 g). The pH of ADS and BG (5.31 and 4.90, respectively) did not differ significantly, whereas the pH of ALDS was 8.34. Viscosity values of ADS and ADLS were 13.51 and 12.35 mPas, respectively, which were significantly higher than that of BG (3.62 mPas). Overall, these results show that duck skin is a potential raw material for gelatin production, as it has a high bloom value and is readily available in Malaysia.
title Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS)
title_full Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS)
title_fullStr Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS)
title_full_unstemmed Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS)
title_short Physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ADS) or mixed alkaline-acid pretreatment (ALDS)
title_sort physicochemical properties of peking duck skin gelatin extracted using acid pretreatment (ads) or mixed alkaline-acid pretreatment (alds)