Synergistic Effects of Nisin-Assisted Thermosonication on Quality Characteristics of Apple Juice
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Notice bibliographique
Résumé
Awareness in consumers towards the safety and quality of food is increasing day by day, that is why the demand for safe and nutritious food has been increased. The present study was conducted to evaluate the synergistic effects of bio preservative nisin (NS) with thermosonication (TS) on the quality and safety attributes of apple juice. The purpose of conducting the given research was to check the effects of chemically assisted TS and to provide microbial safety to the apple juice without thermal degradation. Treatments were applied by using TS (24kHz, 30oC, 50min) in T1 and at 60oC in T2, after that NS was added in treated samples at the concentration of 75 mg/L in T3 and 100 mg/L in T4, samples were analyzed with the interval of 5 days during storage of 15 days. Final results, stated that value of acidity and cloud value increased from (0.34±0.04) to (0.41±0.09) and (0.09 ± 0.02) to (1.13 ± 0.05) respectively after applying the treatment of TS and TS+NS, but decreasing trend were seen during storage interval. Treatments increased the total phenolic contents of juice from (274.53) to (291.60) in T4 followed by T3 but decrease to (288.45) after storage interval of 15 days. On the other hand, the significant decrease was seen during treatment and storage in the pH from (3.93) to (3.88) in T4 and ascorbic acid from (4.09) to (3.68 mg/100mg) due to heating and increase in storage time. Nonsignificant results showed in the TSS during storage and after treatments. Treatments like TS and TS+NS improved the color of apple juice, which gave decreasing trend during storage. Total plate count decreased significantly after the treatments like T4 (TS+NS) and T3 from 1.97 log to 1.53 log, but microbial load increased a little bit during storage; efficiently retained by T4 treatment. All the treatments improved in the overall acceptability of apple juice. Therefore, the findings of the given study analyzed that TS+NS treatment (T4 & T3) are better methods for providing quality retention and microbial safety of apple juice without thermal degradation as compared to simple TS treatment (T1 & T2), but both TS and TS+NS have the potential to retain quality in apple juice. Hence; the study concluded that TS+NS is an effective method to decrease microbial load without thermal degradation of quality characteristics.
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Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,004 | 0,004 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle