Ananas acid

Hydrolysis of thelothurins A and B, the defensive saponins of the Indo-Pacific sea cucumber Thelonota ananas, with aqueous acetic acid yields the genuine aglycones (51) and (52) whose structures were proved chemically by interrelation... 

Ananas comosus (L.) Merrill Feng Li (leaf) Ergosterol peroxide, ananasic acid, 5 -stigmautena-3 (3,7d-diol, 3,4-dihydroxy cinnamic acid, 4-hydroxycinnamic acid, bromelin, vitamins.57 Antioxidant activity, for digestion, lower blood pressure, anticancer. 

Figure 1 Alignment of the amino acid sequences of stem bromelain and papain. Amino adds identical for both sequences are boxed. Bioin Anaco Bromelain from Ananas comasun Papa Carpa papain from Cariea papaya. (Sequences were extracted from the SwissProt protean sequence dara base.)...

The structure and stereochemistry of passiflorine (37), a glucoside from the leaves of Passiflora edulis, have been confirmed by X-ray analysis. An interesting transposition of the cyclopropane ring, to (39), was observed on reaction of the aglucone methyl ester (38) with acid. Ananasic acid, a trihydroxy-acid from pineapple stems (Ananas comosus), has been assigned the structure (40). Three... 

Bromelain Neutral Proteinase Anana sativa Acids and Peptides Precursors for Maillard Reactions... 

E.I. Ating, S.A. Umoren, I.I. Udousoro, E.E. Ebenso, A.P. Udoh (2010). Leaves extract of Ananas sativum as green corrosion inhibitor for aluminium in hydrochloric acid solutions. Green Chemistry Letters and Reviews 3(2), pp. 61-68. 

Analgesine. See Antipyrine Ananase. See Bromelain Ananas sativus Ananas sativus juice. See Pineapple (Ananas sativus) Juice Anatol. See Lanolin alcohol Anazolene, sodium. See Acid blue 92 Ancadride HHPA. See Hexahydrophthalic anhydride... 

Bhaduii SK, Sen SK, Dasgupta PC (1983) Structural studies of an acidic polysaccharide isolated from the leaf fibre of pineapple (Ananas comosus MERR). Carbohydr Res 121 211-220 Bhattacharya TB, Biswas AK, Chatterjee J, Pramnick D (1986) Short pineapple leaf fibre reinforced rubber composites. Plast Rubb Process Appl 6 119-125 Bismarck A, Mishra S, Lampke T (2005) Plant fibers as reinforcement for green composites. In Mohanty AK, Misra M, Drzal LT (eds) Natural fibers, biopolymers and biocomposites. Taylor Francis, EL, Boca Raton... 

In the genus Ananas, as well as Ananas comosus (Neales et al, 1965 Medina, 1974), A.sativus (Milburn et al, 1968 Seshagiri and Suryanarayana-Murthy, 1951), A. lucidus (Medina, 1974), and A, ananassoides (Coutinho, 1969) have been shown to be Crassulacean Acid Metabolism plants. 

Aubert,B. Effects de la radiation globale sur la synthese d acides organiques et la regulation stomatique de plants succulentes exemple d Ananas comosus (L.) Merr. Oecol. Plants 6, 25-34(1971)... 

Seshagiri,P.V.V., Suryanaryana-Murthy,A. Studies in the organic acid metabolism of Ananas sativa L. J. Indian Bot. Soc. 36,254-261 (1951)... 

Suberin is laid down in the cell wall of calcium oxalate crystal idioblasts. This deposition has been characterized in crystal cells in the bark of Larix decidua, Acacia Senegal, and Picea abies (481, 482). The suberin in crystal idioblast cell walls from Agave americana was characterized both ultrastructurally (Fig. 6.4.3) and chemically, and the major aliphatic component was shown to be octadocenedioic acid (25%) (117). The basal walls of leaf trichomes are suberized as shown in Abutilon megapotamicum (161), Ananas comosus (395), and Larrea tridentata (451). The walls of oil cells found in Acorus calamus (9) and Laurus nobilis (291) also appear ultrastructurally to be suberized. Suberized cells encircle silica cells in the stem of Lolium temulentum (271). In all of the cases listed above, the suberin may serve to protect the rest of the plant from potentially toxic components. 

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