Malic acid

The content of water-soluble vitamins, trans-resveratrol, total phenolic content and antioxidant capacity of the jujube fruits decreased during the maturation. The trans-resveratrol content of the jujube fruits was investigated for the first time and no trans-resveratrol content could be detected at red maturation stage. The major organic acid and sugar at the red maturation stage were found to be malic acid and sucrose, respectively

6p mudbound 10-12-2021 9 1   Download

The various organic acids have screened; like gallic acid, 4-hydroxy benzoic acid, 4-amino benzoic acid, phenylacetic acid, chloroacetic acid, sulfosalicylic acid, sulfanilic acid, chloro benzoic acid, phthalic acid, salicylic acid, cinnamic acid, hippuric acid, 1- naphthyl acetic acid, o-amino benzoic acid, p-TSA, succinic acid, malic acid, and among them sulfanilic acid is a suitable catalyst. The reaction condition was optimized with respect to the solvent, the amount of catalyst as well as the variation of the ketone, aldehyde, and amine substrates.

13p cothumenhmong11 06-05-2021 15 2   Download

Here various types of biosensors such as physicochemical, bioluminescent, electrochemical, opto-electric, piezoelectric, thermometric and magnetic has been deliberated to show their usefulness and applications in multiple field. Food industry requires suitable analytical methods for the safety and quality checking of foods. Chemical and biological hazards detection in foods is important to the human health.

17p caygaocaolon6 30-07-2020 17 1   Download

Malate is one of the most important organic acids in many fruits and its concentration plays a critical role in organoleptic properties. Several studies suggest that malate accumulation in fruit cells is controlled at the level of vacuolar storage.

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Pear cv. Nashpati were subjected to three treatments viz. T1 (Individual Shrink wrapping), T2 (Shrink Wrapping in trays) and T3(Control treatment) were stored in ambient condition (29-32oC temperature and 55-78% relative humidity) in which periodical observations were recorded on physiological loss in weight (PLW, %), total soluble solid (TSS, °Brix), titratable acidity (mg of malic acid/g), decay loss (%) and sensory quality (%) at Department of Post-Harvest Management, College of Horticulture and Forestry, Arunachal Pradesh, India during the year 2017-2018.

7p angicungduoc4 26-04-2020 5 0   Download

Poly(L-malic acid) (PMA) is a water-soluble polyester with many attractive properties in medicine and food industries, but the high cost of PMA fermentation has restricted its further application for large-scale production.

10p vihamax2711 21-04-2020 7 1   Download

The grape berry is considered a sink for primary key metabolites and relies on the use of available carbohydrates produced by photosynthesis to support its growth and development. The berry size and quality at the time of harvest mainly depends on water, sugars such as glucose, fructose and sucrose, organic acids (mainly malic and tartaric acids), amino acids (arginine, proline and glutamic acid), phenolic compounds (anthocyanins, flavonoids and tannins) and aroma precursor.

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In filamentous fungi, transport of organic acids across the mitochondrial membrane is facilitated by active transport via shuttle proteins. These transporters may transfer different organic acids across the membrane while taking others the opposite direction.

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In the present study endophytic bacteria were isolated from Aegle marmelos and were screened for phosphate solubilizing activity. The isolate AP01 showed the ability to solubilize inorganic tricalcium phosphate and thus was characterized. Phenotypic, biochemical and genotypic analysis revealed, the isolate to be Kosakonia cowanii, a gram –ve proteobacterium of family enterobacteriaceae with accession no. MK834804, of the three media viz.

13p caygaocaolon3 27-02-2020 41 0   Download

It is well established that glauconite has potassium (K) content but issue of discussion is that whether it has ability to release its content or not when it comes under the action of plant’s exudates or secretions. Plant’s exudates generally contain mild organic acids. So in this experiment, organic acids with same concentration as in maize root exudates were taken as solubilising medium to solubilise glauconite nano-particle.

6p nguaconbaynhay3 07-02-2020 11 0   Download

Bài thuốc này, giúp cơ thể hạ nhiệt nhanh chóng, người bệnh sẽ cảm thấy thèm ăn. Theo nghiên cứu hiện đại, trong quả me có nhiều vitamin C, B, khoảng 14% acid tartaric và một số nhỏ malic acid… giúp kích thích vị giác, cải thiện tình trạng kém ăn, mệt mỏi do nắng nóng hay buồn nôn, giảm khẩu vị do mang thai.

4p mynhan1981 02-09-2013 62 7   Download

Ngũ vị tử là quả chín phơi hay sấy khô của cây ngũ vị (Schisandra sinensis Baill.), tên khác huyền cập, ngũ mai tử. Nam ngũ vị tử là quả của cây nắm cơm (Kadsura japonica L.), cùng thuộc họ ngũ vị tử. Thành phần hóa học: Có các dẫn chất dibenzo [a,c] cycloocten (các schisandrin), tinh dầu có mùi chanh, acid citrric, acid malic, acid tartric.

4p skinny_1 01-08-2013 48 2   Download

The naturally synchronous plasmodia of myxomycetes synthesize poly(b-L-malic acid), which carries out cell-specific functions. In Physarum polycephalum, poly(b-L-malate) [the salt form of poly(b-L-malic acid)] is highly concentrated in the nuclei, repressing DNA synthetic activity of DNA polymerases by the formation of reversible complexes. To test whether this inhibitory activity is cell-cycle-dependent, purified DNA polymerase a of P.

6p research12 01-06-2013 61 2   Download

The nuclei in the plasmodiumofPhysarumpolycephalum,as of othermyxomycetes, containhigh amounts of polymalate, which has been proposed to function as a scaffold for the carriage and storage of several DNA-binding proteins [Angerer, B. and Holler, E. (1995) Biochemistry34, 14741– 14751]. By delivering fluorescence-labeled polymalate into a growing plasmodiumby injection, we observedmicroscopic staining of nuclei in agreement with the proposed function.

7p tumor12 20-04-2013 35 2   Download

Thuốc tạo điều kiện làm sạm da Các thuốc này không trực tiếp gây sạm da nhưng tạo điều kiện cho các tác nhân khác gaya ra hiện tượng này. Ví dụ: khi dùng acid citric, acid malic, tatric (trong kem AHA), aspirin, acid salycylic, chúng bóc các tầng bì thành lớp mỏng (lột da) làm cho tế bào biểu bì mới (da non) lộ ra. Sau đó, tia cực tím trong nắng tác dụng lên lớp biểu bì mới, gây sạm da. 

3p bibocumi39 11-04-2013 68 3   Download

Polymalic acid is receiving interest as a unique biopolymer of the plasmodia of mycetozoa and recently as a biogenic matrix for the synthesis of devices for drug delivery. The acellular slime moldPhysarum polycephalumis charac-terized by two distinctive growth phases: uninucleated amoebae and multi-nucleated plasmodia.

10p inspiron33 26-03-2013 30 4   Download

Malic enzyme catalyses the reduction of NADP+ to NADPH and the decarboxylation ofl-malate to pyruvate through a general acid⁄base mech-anism. Previous kinetic and structural studies differ in their interpretation of the amino acids responsible for the general acid⁄base mechanism.

10p inspiron33 25-03-2013 56 2   Download

abdabs Noun. Terror, the frights, nerves. Often heard as the screaming abdabs. Also very occasionally 'habdabs'. [1940s] absobloodylutely Adv. Absolutely. Abysinnia! Exclam. A jocular and intentional mispronunciation of "I'll be seeing you!" accidentally-onpurpose Phrs. Seemingly accidental but with veiled malice or harm. AC/DC Adj. Bisexual. ace (!) Adj. Excellent, wonderful. Exclam. Excellent! acid Noun. The drug LSD. Lysergic acid diethylamide. [Orig. U.S. 1960s] acid house Noun.

222p anhcu1003 29-12-2012 162 74   Download

Táo chứa nhiều chất xơ rất tốt cho hệ tiêu hóa, giúp bạn giảm cân dễ dàng. Rất nhiều phụ nữ đã giảm cân thành công với táo. Tùy cơ địa và tình trạng hấp thu của mỗi hệ tiêu hóa, nhưng về cơ bản bạn sẽ giảm được 5-7 kg sau 3 tháng ăn kiêng với táo. Táo chứa nhiều acid malic giúp phân giải những tế bào mỡ tích tụ trong cơ thể, có thể phòng chống tăng cân.

6p uyendieu 07-12-2012 49 2   Download

18 mẹo làm đẹp cần thiết .Với vài mẹo nhỏ cùng với những thứ đơn giản có sẵn trong bếp hoặc vài món trong tủ mỹ phẩm, bạn đã có thể giúp mình trông xinh tươi, rạng rỡ hơn. . Bí quyết từ đá lạnh: Hãy đổ nước ép táo vào khay làm đá. Sau khi đá đông lại, bạn chà nhẹ lên da sẽ thấy hiệu quả bất ngờ. Acid malic trong viên nước ép táo có chức năng chống lão hóa. Nước đá giúp da săn chắc, chống nếp nhăn. Nó cũng kích thích máu lưu thông đến vùng cảm giác...

9p lulaula 27-10-2012 50 3   Download