Application of Gelatin Incorporated with Red Pitaya Peel Methanol Extract as Edible Coating for Quality Enhancement of Crayfish (Procambarus clarkii) during Refrigerated Storage

Abstract

China is one of the largest producers of red pitaya in the world and responsible for disposal of the huge amount of peel generated as a waste. The objective of this research was to evaluate the effect of the addition of red pitaya peel extract (RPPE, 1.0%, 2.0%, or 3.0% (w/v)) and 0.1% ε-polylysine (ε-PL) to a fish gelatin edible coating on the preservation of deshelled crayfish (Procambarus clarkii) during refrigerated storage. The physicochemical and water migration of the samples were determined during 8-day storage. Deshelled crayfish packaged in edible coatings exhibited significantly (p<0.05) lower values for total volatile basic nitrogen (TVB-N), K value maintenance, and free amino acids (FAAs). This study shows that application of an edible coating incorporated with RPPE and ε-PL is an effective strategy in retarding the quality deterioration in deshelled crayfish during storage.

WITHDRAWN: Efficacy of Chitosan/propolis Liquid Extract Emulsion Coating on Refrigerated Storage Quality of Crayfish Meat 

“…The maximum permissible level for the K value is 60% (Ehira and Uchiyama, 1974) According to these results, it might be supposed that the Ch + PLE coatings prohibited the degradation of ATP and keep quality of cray sh during refrigerated storage. Similar results were reported by Liu et al (2019) for cray sh coated by a gelatin-containing red pitaya peel methanol extract. Song et al (2011) also described a similar result for bream.…”

Preservative Effects of Gelatin Active Coating Containing Eugenol and Higher CO2 Concentration Modified Atmosphere Packaging on Chinese Sea bass (Lateolabrax maculatus) during Superchilling (−0.9 °C) Storage

“…FAAs were monitored by the method of Liu et al [84] with some modifications. 5g of mashed sea bass muscle and 15 mL of 15% cold trichloroacetic acid were homogenized at 10,000 rpm for 5 min and left to stand at 4 • C for 2 h. After being centrifuged at 5980 ×g for 15 min at 4 • C, 5 mL of the supernatant was diluted with deionized water to 10mL.…”

Transport and Recovery of Turbot (Scophthalmus maximus) Sedated with MS-222 and Eugenol: Effects on Intermediary Metabolism and Osmoregulation

“…Nucleotide extracts were prepared according to the method of Fang et al [ 20 ]. ATP-related compounds, including adenosine triphosphate (ATP), inosine monophosphate (IMP) and adenosine monophosphate (AMP), were analyzed while using HPLC (Waters 2695, Milford, CT, USA), equipped with a VP-CDS C18 column (150 × 46 mm).…”