Quality indicators and shelf life of red octopus (Octopus maya) in chilling storage

Abstract There are no precedents concerning the quality of Octopus maya during chilled storage. This study evaluated the shelf life of the red octopus in chilling storage (4oC) and the correlation of the sensory quality index with microbiological counting and the biochemical indicators (hypoxanthine, histamine and volatile amines). A total of 112 whole raw octopi (average weight of 896 g) were randomly selected from seven batches and exposed to 4°C for 18, 24, 48, 72, 84, 96, and 100 h. The histamine concentration (91.7%), followed by the counts of psychrotrophic bacteria (5.5%) and hypoxanthine (2.2%), were the predictors from the redundancy analysis that better explained the changes taking place during the chilling hours. After 72 h of chilling, the microbial count was determined to be log 4.7 CFU/g, and the octopus samples were classified as B quality (minor sensory quality defects) based on the sensory quality scale. Although the samples were not classified as unacceptable at 100 h of refrigeration by the sensory index, the level of histamine reached the defect action level (5 mg/100 g) as ruled by the International Food Safety Authorities. The shelf life of the red octopus in chilling storage was predicted to be 119 h.

Codex procès de Cuauhtitlan (8 avril 1568).

Comparution de treize accusés devant don Alonso de Solórzano, juge de la résidence du village Guahtitlan

Justinianus imperator, Codex, libri I-IX, cum glossis.

Au f. 1v figurent un ex-libris effacé et une mention de possesseur (?): "Girardo di Piotte di Torunzzo", ainsi que la mention "A la bibliotheque de l'Eglise de Paris" précédée de la cote F9 (XVIIe s.). Notre-Dame.

Justinianus imperator, Codex, libri I-IX, cum glossa ordinaria Accursii.

Le ms. a reçu des additions à la glose ordinaire, de différentes mains du XIVe s., dont certaines signées: "Jo. Faber" (passim, entre les ff. 157v et 185), "Ja." (81v), "Ja. de Ravenna et chy." (98). Les ff. 98, 163-165 et 185, montés sur onglets, ont été rajoutés pour accueillir des additions à la glose, d'une main du XIVe s., la même qui a inséré les additions signées "Jo. Faber".; le f. 98 est détaché.

Codex Justiniani Libri I-IX , cum glosa

Abbaye de Saint-Victor de Paris

Codex justinianus Libri I-IX

Abbaye de Saint-Victor de Paris