Items where Author is "Ahmad, Siti Hajar"

Ahmad, Siti Hajar and Wan Mohtar, Wan Abd Al Qadr Imad and Ab Kadir, Mohd Safuan and Abd Rahim, Muhamad Hafiz and Saari, Nazamid (2018) Evaluation of a Malaysian soy sauce koji strain Aspergillus oryzae NSK for γ-aminobutyric acid (GABA) production using different native sugars. Food Science and Biotechnology, 27 (2). 479 - 488. ISSN 1226-7708; ESSN: 2092-6456

Mohamad, Munirah and Ahmad, Siti Hajar and Mohd Ghazali, Hasanah and Tengku Muda Mohamed, Mahmud and Ketaren, Bunga Raya and Abdul Shukor, Nur Indah and Tajidin, Nor Elliza (2018) Plant vegetative stages and drying methods affect flavonoid content of Clinacanthus nutans extracts. African Journal of Traditional, Complementary and Alternative Medicines, 15 (4). 54 - 63. ISSN 0189-6016; ESSN: 2505-0044

Tan, Wei Loon and Abu Bakar, Rosenani and Ishak, Che Fauziah and Ahmad, Siti Hajar and Tang, Tze Piew (2018) Potassium and nitrate retention in three different soil amended with oil palm empty fruit bunch biochar. International Journal of Agriculture and Environmental Research, 4 (4). 854 - 870. ISSN 2455-6939

Hasan, Fatimahtul Hazwani and Tajidin, Nor Elliza and Ahmad, Siti Hajar and Tengku Muda Mohamed, Mahmud and Abdul Shukor, Nur Indah (2018) Ripening characteristics of vapour heat treated 'frangi' papaya (Carica papaya l. cv. frangi) as affected by maturity stages and ethylene treatment. Bragantia, 77 (2). 372 - 384. ISSN 0006-8705; ESSN: 1678-4499

Tan, Xue Yi and Ahmad, Siti Hajar and Abdul Shukor, Nur Indah and Saari, Nazamid and Ismail, Mohd Firdaus (2017) Postharvest quality of chilling injured ginger rhizomes (Zingiber officinale Roscoe cv. Bentong) as affected by maturity stages, storage temperatures, and durations. Indian Journal of Applied Research, 7 (4). 595 - 601. ISSN 2249-555X

Kuan, Chee Hao and Rukayadi, Yaya and Ahmad, Siti Hajar and Wan Mohamed Radzi, Che Wan Jasimah and Kuan, Chee Sian and Yeo, Siok Koon and Thung, Tze Young and New, Chia Yeung and Chang, Wei San and Loo, Yuet Ying and Tan, Chia Wanq and Bahumaish, Ramzi Othman Saeed and Mohd Fadzil, Siti Norshafawatie and Nordin, Y. and Kwan, S. Y. and Radu, Son (2017) Antimicrobial resistance of Listeria monocytogenes and Salmonella Enteritidis isolated from vegetable farms and retail markets in Malaysia. International Food Research Journal, 24 (4). pp. 1831-1839. ISSN 1985-4668; ESSN: 2231-7546

Tajidin, Nor Elliza and Ahmad, Siti Hajar and Tengku Muda Mohamed, Mahmud and Shaari, Khozirah and Abdul Shukor, Nur Indah (2017) Growth dynamics and yield of Andrographispaniculata (Burm. F.) nees as influence by plant harvest age. International Journal of Agriculture, Environment and Biotechnology, 2 (2). pp. 178-195. ISSN 2456-8643

Chee, Hao Kuan and Leonard, Whye Kit Lim and Tai, Wei Ting and Rukayadi, Yaya and Ahmad, Siti Hajar and Wan Mohamed Radzi, Che Wan Jasimah and Tze, Young Thung and Ramzi, Othman Bahumaish and Wei, San Chang and Yuet, Ying Loo and Chee, Sian Kuan and Yeo, Siok-Koon and Radu, Son (2017) Simulation of decontamination and transmission of Escherichia coli O157:H7, Salmonella Enteritidis, and Listeria monocytogenes during handling of raw vegetables in domestic kitchens. Food Control, 80. pp. 395-400. ISSN 0956-7135; ESSN: 1873-7129

Dollah, Sarafhana and Abdulkarim, Sabo Mohammed and Ahmad, Siti Hajar and Khoramnia, Anahita and Mohd Ghazali, Hasanah (2016) Physico-chemical properties of Moringa oleifera seed oil enzymatically interesterified with palm stearin and palm kernel oil and its potential application in food. Journal of the Science of Food and Agriculture, 96 (10). pp. 3321-3333. ISSN 0022-5142; ESSN: 1097-0010

Shadmani, Nasim and Ahmad, Siti Hajar and Saari, Nazamid and Ding, Phebe and Tajidin, Nor Elliza (2015) Chilling injury incidence and antioxidant enzyme activities of Carica papaya L. 'Frangi' as influenced by postharvest hot water treatment and storage temperature. Postharvest Biology and Technology, 99. pp. 114-119. ISSN 0925-5214; ESSN: 1873-2356

Dollah, Sarafhana and Mohammed, Abdulkarim Sabo and Ahmad, Siti Hajar and Khoramnia, Anahita and Mohd Ghazali, Hasanah (2015) Enzymatic interesterification on the physicochemical properties of Moringa oleifera seed oil blended with palm olein and virgin coconut oil. Grasas y Aceites, 66 (2). art. no. e073. pp. 1-13. ISSN 0017-3495; ESSN: 1988-4214

Kuan, Chee Hao and Ahmad, Siti Hajar and Radu, Son and Yap, E. S. P. and Zamri, Mohd Zakwan and Shukor, N. I. A. and Tajidin, Nor Elliza and Ketaren, Bunga Raya (2015) Influence of forced-air precooling time on the changes in quality attributes and consumer acceptance of Musa AAA Berangan. International Food Research Journal, 22 (5). pp. 1864-1869. ISSN 1985-4668; ESSN: 2231-7546

Abu Bakar, Rosenani and Abdul Razak, Zahidah and Ahmad, Siti Hajar and Seh-Bardan, Bahi Jalili and Lim, Chin Tsong and Cheah, Poh Meng (2015) Influence of oil palm empty fruit bunch biochar on floodwater pH and yield components of rice cultivated on acid sulphate soil under rice intensification practices. Plant Production Science, 18 (4). pp. 491-500. ISSN 1343-943X; ESSN: 1349-1008

Yosoff, Siti Fairuz and Tengku Muda Mohamed, Mahmud and Parvez, Anwar and Ahmad, Siti Hajar and Mohamad Ghazali, Farinazleen and Hassan, Hamizah (2015) Production system and harvesting stage influence on nitrate content and quality of butterhead lettuce. Bragantia, 74 (3). pp. 322-330. ISSN 0006-8705; ESSN: 1678-4499

Rahman, Md. Muklesur and Ahmad, Siti Hajar and Tengku Muda Mohamed, Mahmud and Ab. Rahman, Mohamad Zaki (2014) Antimicrobial compounds from leaf extracts of Jatropha curcas, Psidium guajava and Andrographis paniculata. The Scientific World Journal, 2014. art. no. 635240. pp. 1-8. ISSN 2356-6140; ESSN: 1537-744X

Dollah, Sarafhana and Mohammed, Abdulkarim Sabo and Ahmad, Siti Hajar and Khoramnia, Anahita and Mohd Ghazali, Hasanah (2014) Physicochemical properties and potential food applications of Moringa oleifera seed oil blended with other vegetable oils. Journal of Oleo Science, 63 (8). pp. 811-822. ISSN 1345-8957; ESSN: 1347-3352

Almasi, Parviz and Tengku Muda Mohamed, Mahmud and Ahmad, Siti Hajar and Kadir, Jugah and Hassan, Fakhrul (2013) Postharvest responses of six cut Mokara spp. hybrids to exogenous ethylene. Australian Journal of Crop Science, 7 (7). pp. 894-899. ISSN 1835-2693; ESSN: 1835-2707

Phornvillay, Surisa and Ahmad, Siti Hajar and Mohamad Yusuf, Zazarini (2013) Effect of 2,4-D and BAP on growth and chemical characteristics of bean sprouts (Vigna mungo L.). Acta Horticulturae, 1012. pp. 287-292. ISSN 0567-7572

Ketaren, Bunga Raya and Ahmad, Siti Hajar and Juraimi, Abdul Shukor and Abu Bakar, Rosenani and Uddin, Md. Kamal (2013) Floristic composition of weed community in selected vegetable fields in Selangor, Malaysia. Journal of Food, Agriculture and Environment, 11 (3&4). pp. 1659-1663. ISSN 1459-0255; ESSN: 1459-0263

H., Hamizah and Tengku Muda Mohamed, Mahmud and Ahmad, Siti Hajar and Sijam, Kamaruzaman (2013) Screening of antagonistic yeast for biological control activity against anthracnose (Colletotrichum gloeosporioides) in 'Frangi' papaya. Acta Horticulturae, 1012. pp. 739-744. ISSN 0567-7572

Almasi, Parviz and Tengku Muda Mohamed, Mahmud and Ahmad, Siti Hajar and Kadir, Jugah and Mirshekari, Amin (2012) Postharvest responses of cut Dendrobium orchids to exogenous ethylene. African Journal of Biotechnology, 11 (16). art. no. 19CF52037846. pp. 3895-3902. ISSN 1684-5315

Rahman, Md. Mukhlesur and Ahmad, Siti Hajar and Tengku Muda Mohamed, Mahmud and Ab. Rahman, Mohamad Zaki (2011) Extraction of Jatropha curcas fruits for antifungal activity against anthracnose (Colletotrichum gloeosporioides) of papaya. African Journal of Biotechnology, 10 (48). art. no. 0961B0A24308. pp. 9796-9799. ISSN 1684–5315

Choon, Sea Yeat and Ahmad, Siti Hajar and Ding, Phebe and Sinniah, Uma Rani and Abdul Hamid, Azizah (2010) Morphological and chemical characteristics of black gram (Vigna mungo L.) sprouts produced in a modified atmosphere chamber at four seeding densities. Pertanika Journal of Tropical Agricultural Science, 33 (2). pp. 179-191. ISSN 1511-3701

Ding, Phebe and Ahmad, Siti Hajar and Mohd Ghazali, Hasanah (2007) Changes in Selected Quality Characteristics of Minimally Processed Carambola (Averrhoa Carambola L.) When Treated with Ascorbic Acid. Journal of Science of Food and Agriculture, 87. pp. 702-709. ISSN 0022-5142

Ratule, Muhammad Taufiq and Osman, Azizah and Saari, Nazamid and Ahmad, Siti Hajar (2007) Microstructure of peel cell wall and selected physico-chemical characteristics of 'Berangan' banana (Musa cv. Berangan [AAA]) ripened at high temperature. Asia Pacific Journal of Molecular Biology and Biotechnology, 15 (1). pp. 8-13. ISSN 0128-7451

Ding, Phebe and Ahmad, Siti Hajar and Abd. Razak, Abd. R. and Tengku Muda Mohamed, Mahmud and Saari, Nazamid (2007) Plastid Ultrastructure, Chlorophyll Contents and Colour Expression during Ripening of Cavendish Banana (Musa Acuminata ‘Willams at 18°C and 27°C. New Zealand Journal of Crop and Horticultural Science, 35 (2). pp. 201-210. ISSN 0114-0671

Tengku Muda Mohamed, Mahmud and Ramlan, Mohd Fauzi and Ahmad, Siti Hajar and Kays, Stanley J. (1997) The effect of short-term intermittent light exposure on total carbon content and quality of dark-stored ornamental chilli plants. Pertanika Journal of Tropical Agricultural Science, 20 (1). pp. 13-18. ISSN 0126-6128

Tan, Xue Yi and Abdul Shukor, Nur Indah and Ahmad, Siti Hajar (2015) Effects of maturity stages, storage temperatures and storage durations on chilling injury and antioxidant activity of fresh ginger (Zingiberofficinale). In: 25th Malaysian Society of Plant Physiology Conference (MSPPC 2015), 18-20 Aug. 2015, Sunway Lost World Hotel, Tambun, Ipoh, Perak. (pp. 97-100).

Phornvillay, Surisa and Ahmad, Siti Hajar and Abdullah, Nur Ashikin Psyquay and Abu Bakar, Rosenani and Shukor, N. I. A. (2015) Glucomannan content of Amorphophallus spp. in Peninsular Malaysia. In: 25th Malaysian Society of Plant Physiology Conference (MSPPC 2015), 18-20 Aug. 2015, Sunway Lost World Hotel, Tambun, Ipoh, Perak. (pp. 42-46).

Ahmad, Siti Hajar and Yap, E. S. P. (2014) Challenges in postharvest handling of fruits and vegetables: reducing losses and maintaining quality. In: International Conference on Plant Physiology 2014, 26-28 Aug. 2014, Discovery Kartika Plaza Hotel, Bali, Indonesia. (pp. 137-141).

Tan, Wei Loon and Abu Bakar, Rosenani and Ahmad, Siti Hajar and Ishak, Che Fauziah (2014) Oil palm empty fruit bunch biochar soil amendment in Amaranthus viridis cultivation to improve crop performance and soil properties. In: 20th World Congress of Soil Science, 8-13 June 2014, Jeju Island, South Korea. (p. 1). (Unpublished)

Hassan, Hamizah and Tengku Muda Mohamed, Mahmud and Ahmad, Siti Hajar and Sijam, Kamaruzaman and Siddiqui, Yasmeen (2013) Screening and mode of action of antagonist yeasts against Colletotrichum gloeosporioides. In: 24th Malaysian Society of Plant Physiology Conference (MSPPC 2013), 27-29 Aug. 2013, Prinzpark Resort, Terengganu. (pp. 269-273).

Ketaren, Bunga Raya and Ahmad, Siti Hajar and Juraimi, Abdul Shukor and Abu Bakar, Rosenani and Tajidin, Nor Elliza and Mohamad, Munirah (2012) Effectiveness of selected mulches improving postharvest quality of field-cultivated leaf lettuce. In: 23rd Malaysian Society of Plant Physiology Conference (MSPPC 2012), 18-20 Dec. 2012, Bayview Hotel, Langkawi, Kedah. (pp. 68-71).

Tan, Wei Loon and Abu Bakar, Rosenani and Ahmad, Siti Hajar and Ishak, Che Fauziah (2012) Oil palm empty fruit bunch biochar: characterization and potential usage as soil amendment for its nutrient retention capacity in soil. In: The 4th IBI Biochar Congress, 16-20 Sept. 2012, Beijing, China. .

A. A., Siti Nur Aisyah and Tengku Muda Mohamed, Mahmud and Ahmad, Siti Hajar and Tan, W. L. (2011) Effects of anti-browning agents on ambarella (Spondias dulcis) quality during storage. In: 22nd Malaysian Society of Plant Physiology Conference (MSPPC 2011), 21-23 Nov. 2011, Grand Bluewave Hotel, Johor Bahru. (pp. 60-64).

Ketaren, Bunga Raya and Ahmad, Siti Hajar and Juraimi, Abdul Shukor and Abu Bakar, Rosenani (2011) Floristic composition of weed community in selected organic vegetable fields in Malaysia. In: 22nd Malaysian Society of Plant Physiology Conference (MSPPC 2011), 21-23 Nov. 2011, Grand Bluewave Hotel, Johor Bahru. (pp. 173-177).

Tajidin, Nor Elliza and Ahmad, Siti Hajar and Abu Bakar, Rosenani and H., Azimah and Phornvillay, Surisa and M. L., Zainal Abidin (2011) Postharvest quality characteristics of lemongrass (Cymbopogon citratus) at three maturity stages. In: 22nd Malaysian Society of Plant Physiology Conference (MSPPC 2011), 21-23 Nov. 2011, Grand Bluewave Hotel, Johor Bahru. (pp. 51-55).

Ahmad, Siti Hajar and Phornvillay, Surisa and Tajidin, Nor Elliza and Abu Bakar, Rosenani and M. L., Zainal Abidin (2011) Production and postharvest handling of organic vegetables. In: 22nd Malaysian Society of Plant Physiology Conference (MSPPC 2011), 21-23 Nov. 2011, Grand Bluewave Hotel, Johor Bahru. (pp. 7-10).

Hasan, Fatimahtul Hazwani and Ahmad, Siti Hajar and Lee, K. W. (2011) Ripening characteristics of vapour heat treated 'Paiola' papaya (Carica papaya) as affected by ethylene gas. In: 22nd Malaysian Society of Plant Physiology Conference (MSPPC 2011), 21-23 Nov. 2011, Grand Bluewave Hotel, Johor Bahru. (pp. 56-59).

Yusoff, Siti Fairuz and Tengku Muda Mohamed, Mahmud and Mohamad Ghazali, Farinazleen and Ahmad, Siti Hajar (2011) A survey on contamination of E.coli O157:H7 on butterhead lettuce. In: 22nd Malaysian Society of Plant Physiology Conference (MSPPC 2011), 21-23 Nov. 2011, Grand Bluewave Hotel, Johor Bahru. (pp. 167-169).

Wan Mansoor, Muhammad Humam and Tengku Muda Mohamed, Mahmud and Ahmad, Siti Hajar and Selamat, Ahmad (2010) Estimation of postharvest losses at various stages of the supply chain for tomato (Lycopersicum esculentum) and cabbage (Brassica oleracea var. Capitata). In: 21st Malaysian Society of Plant Physiology Conference (MSPPC 2010), 13-14 Dec. 2010, Equatorial Hotel, Brinchang, Cameron Highlands, Pahang. (pp. 47-49).

Rahman, Md. Mahmudur and Ahmad, Siti Hajar and Tengku Muda Mohamed, Mahmud and Rahman, M. Z. A. (2010) Extraction of Jatropha curcas fruits for antifungal activity. In: 21st Malaysian Society of Plant Physiology Conference (MSPPC 2010), 13-14 Dec. 2010, Equatorial Hotel, Brinchang, Cameron Highlands, Pahang. (pp. 76-79).

Ketaren, Bunga Raya and Juraimi, Abdul Shukor and Ahmad, Siti Hajar and Abu Bakar, Rosenani (2010) Floristic composition of weed community in selected vegetable fields in Malaysia. In: 21st Malaysian Society of Plant Physiology Conference (MSPPC 2010), 13-14 Dec. 2010, Equatorial Hotel, Brinchang, Cameron Highlands, Pahang. (pp. 80-84).

Tajidin, Nor Elliza and Ahmad, Siti Hajar and Abu Bakar, Rosenani and Mohamad, Munirah (2010) Growth performance and nutrient concentration of 'Hijau' lemongrass (Cymbopogon citratus) as affected by maturity stages at harvest. In: 21st Malaysian Society of Plant Physiology Conference (MSPPC 2010), 13-14 Dec. 2010, Equatorial Hotel, Brinchang, Cameron Highlands, Pahang. (pp. 35-38).

Choon, Sea Yeat and Ahmad, Siti Hajar and Ding, Phebe and Sinniah, Uma Rani and Abdul Hamid, Azizah (2009) Effects of seeding density and watering duration on growth characteristics and sprouting atmosphere of black gram (Vigna mungo L.) sprouts grown in a chamber. In: 20th Malaysian Society of Plant Physiology Conference (MSPPC 2009), 24-26 July 2009, Avillion Admiral Cove, Port Dickson, Negeri Sembilan. (pp. 2-5).

Tajidin, Nor Elliza and Ahmad, Siti Hajar and Abu Bakar, Rosenani (2009) Effects of storage temperature, packaging materials and storage duration on postharvest quality characteristics and anthocyanin pigmentation of lemongrass (Cymbopogon citratus). In: 20th Malaysian Society of Plant Physiology Conference (MSPPC 2009), 24-26 July 2009, Avillion Admiral Cove, Port Dickson, Negeri Sembilan. (pp. 73-77).

M., Munirah and Ahmad, Siti Hajar and Mohd Ghazali, Hasanah (2009) Shoot and root growth of kelor stem cuttings (Moringa oleifera). In: 20th Malaysian Society of Plant Physiology Conference (MSPPC 2009), 24-26 July 2009, Avillion Admiral Cove, Port Dickson, Negeri Sembilan. (pp. 173-175).

Melly Novita and Ahmad, Siti Hajar and Ding, Phebe and Abd Halim, Mohd Ridzwan (2007) Physico-chemical quality characteristics of red pitaya (Hylocereus polyrhizus) after postharvest with 1-MCP. In: National Horticulture Conference 'Enhancement of Postharvest Quality For A competitive Malaysian Horticulture Sector', 13-15 Mar. 2007, Johor Bahru. .

Melly Novita, and Ahmad, Siti Hajar and Ding, Phebe (2007) Selecting fruit quality characteristics to predict optimum harvest time of red pitaya (Hylocereus Polyrgizus) fruit. In: 18th Malaysian Society of Plant Physiology Conference, 21-23 Aug 2007, Kota Kinabalu, Sabah. .

Kanniah, Jayashree and Ahmad, Siti Hajar and Osman, Azizah and Tengku Muda Mohamed, Mahmud (2001) Colour and quality characteristics of canned pineapple slices. In: 12th Malaysian Society of Plant Physiology Conference 2001, 29 Sept. 2001, The Mines Resort Hotel, Seri Kembangan, Selangor. . (Unpublished)

A. Halim, Ridzwan and Othman, Wan Mohamad and Ahmad, Siti Hajar (1988) Production of plant proteins and technology transfer : country report : Malaysia. In: Obihiro Asian Seminar on Education for Rural Development, 15-28 Sep. 1988, Obihiro,Japan. .

Ahmad, Siti Hajar and Mohamad, Mahmud Tengku Muda (1987) Effects of atmospheric carbon dioxide, oxygen and ethylene on the growth and quality of mungbean sprouts. In: The Second International Symposium on Mungbean, 16-21 Nov. 1987, Bangkok, Thailand. (pp. 1-25).

A. Halim, Ridzwan and Ahmad, Siti Hajar (1987) Learning and using SAS in agricultural research. In: Inaugural Forum of the SAS Users Association of Selangor and Wilayah Persekutuan, 15 Sept. 1987, Kuala Lumpur. (pp. 1-9).

Ahmad, Siti Hajar Vegetable gardening in small plots. In: 2nd Short Course for Potential School Principals of Maldives, 26 Oct. 1988, Universiti Putra Malaysia. .

Ding, Phebe and Ahmad, Siti Hajar and Abdul Razak, Abdul Rahman (2004) Cell structures of the peel of mature green banana Musa AAA 'Berangan'. Research Snapshot. The Research Management Centre, Serdang, Selangor.

Tengku Muda Mohamed, Mahmud and Sijam, Kamaruzaman and Abd Rahman, Mohd Zaki and Ahmad, Siti Hajar and Azian, Eddy and Ali, Asgar (2004) The use of chitosan in extending the vase life of cut chrysanthemum and In vitro effect on Colletotrichum gloeosporiodes, the causal agent of anthracnose disease of papaya. Research Snapshot. The Research Management Centre, Serdang, Selangor.

Ahmad, Siti Hajar and Irsan, Mukhlis and Tengku Muda Mohamed, Mahmud and Abdullah, Thohirah Lee (1999) Changes in surface colour and other related quality characteristics of carambola (Averrhoa carambola L.) at different stages of maturity. Research Report. The Research Unit, Universiti Putra Malaysia, Serdang, Selangor.

Tengku Muda Mohamed, Mahmud and Awang, Yahya and Ahmad, Siti Hajar and Ramlan, Mohd Fauzi Acclimatization of selected tropical foliage plants for simulated shipping conditions. Research Report. Research Management Centre, Serdang, Selangor.

Abu Bakar, Rosenani and Abdullah, Thohirah Lee and Ishak, Che Fauziah and Ahmad, Siti Hajar Conversion of oil palm waste/residue into a light weight potting media for ornamental plants. Research Report. Research Management Centre, Serdang, Selangor.