Composition, structure, and physicochemical properties of field pea (Pisum sativum L.) starch
Notice bibliographique
Résumé
Starch from four cultivars (Carneval, Carrera, Grande and Keoma) of field pea (Pisum sativum L.) was isolated and its composition, structure, and physicochemical properties were investigated. The results obtained were compared with those of other legume starches reported in the literature. The yield of starch was in the range 32.7-33.5% on a whole seed basis. The starch granules were round to elliptical with smooth surfaces. The free lipid was 0.05% in all starches. However, bound and total lipids ranged from 0.24-0.29% and from 0.28-0.34%, respectively. The total amylose content ranged from 48.8-49.6%, of which 10.9-12.3% was complexed by native lipid. The degree of polymerization (DP) of isolated field pea amyloses ranged from 1300-1350. The chain length distributions of debranched amylopectins of the four starches were analyzed using high performance anion exchange chromatography equipped with a post-column amyloglucosidase reactor and a pulsed amperometric detector (HPAEC-ENZ-PAD). The proportion of short branch chains of chain length DP 6-12 ranged from 16.2-18.6%. Keoma displayed a larger portion (19.4%) of long branch chains (DP>37) than the other three starches (16.2-16.9%). The average amylopectin branch chain lengths ranged from 22.9-24.2. The maximum detectable DP was higher in Keoma (71) than in the other three starches (64-65). The X-ray pattern was of (C type. The relative crystallinity was in the range 20.8-25.1%. The proportion of 'B' polymorphic form was higher in Keoma (25.6%) than in the other three starches (22.1 to 24.1%). There were no significant differences in swelling factor. The extent of amylose leaching at 95°C ranged from 25.20-26.85. All four starches exhibited nearly identical gelatinization transition temperatures. However, the gelatinization temperature range (TC-TO) followed the order: Grande ~ Keoma > Carneval ~ Carrera. The four starches showed identical pasting temperatures and exhibited only marginal differences with respect to 95°C viscosity and to the increase in consistency during the holding period at 95°C. However, the set-back viscosity for Carneval was lower than that of the other starches. There were no significant differences in the extent of acid hydrolysis. However, susceptibility towards α-amylase followed the order: Carneva I~ Carrera ~ Grande > Keoma. The magnitude of changes in transition temperatures and enthalpy, and the broadening of the endotherm during retrogradation (24h) at different storage temperatures (4 and 40°C), followed the order: 4°C/24h > 4°C/24h + 40°C/24h > 40°C/24h. The extent of retrogradation (assessed by changes in enthalpy) followed the order: Carneval ~ Grande ~ Carrera > Keoma. There were no significant differences in the extent of freeze-thaw stability. The results showed that Keoma differed from the other three starches with respect to amylopectin branch chain length distribution, 'B' polymorphic composition, enzymatic digestibility, and degree of amylopectin retrogradation.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| 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 découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».